An injunction is a court order that restrains a person or company from doing something or, in some cases, requires them to take positive action. In Ontario civil litigation, injunctions are commonly used where waiting for a final judgment could allow serious or irreversible harm to occur before the underlying dispute is decided.

The Superior Court of Justice has statutory authority under section 101 of the Courts of Justice Act to grant an interlocutory injunction or mandatory order where it appears just or convenient to do so. Rule 40 of the Rules of Civil Procedure governs important procedural aspects of obtaining that relief.

For ME Law’s broader injunction practice, see Injunctions.

What does an injunction actually do?

The terms of an injunction depend on the right the court is being asked to protect.

An injunction may, for example, restrain a party from disclosing confidential information, transferring disputed property, breaching a contractual restriction, interfering with business assets, or continuing other conduct while the litigation is underway.

A mandatory injunction, by contrast, requires a party to take positive action rather than simply refrain from particular conduct. Because mandatory relief can alter the existing position before the dispute is finally decided, a more demanding legal standard may apply.

See What is a mandatory injunction in Ontario? for that distinction.

The wording of the order matters. An injunction should identify with sufficient precision what conduct is restrained or what action is required because the order may later need to be enforced by the court.

What is an interlocutory injunction?

An interlocutory injunction is temporary relief granted before the underlying legal dispute has been finally determined.

Its purpose is not to decide the lawsuit in advance. Instead, it may preserve rights, prevent threatened harm, or protect the effectiveness of the court’s eventual judgment while the proceeding continues.

Under Rule 40.01, an interlocutory injunction or mandatory order may be sought by a party to a pending or intended proceeding. This is significant in urgent cases because the litigation does not necessarily need to have progressed through pleadings, discovery, or trial before interim protection can be requested.

Section 101 of the Courts of Justice Act separately gives the Superior Court of Justice authority to grant interlocutory relief where it appears just or convenient to do so.

What does a party have to prove to obtain an injunction?

For a conventional interlocutory injunction, the court generally considers the framework established in RJR—MacDonald Inc. v. Canada (Attorney General):

• whether there is a serious question to be tried;
• whether the moving party will suffer irreparable harm if relief is refused; and
• whether the balance of convenience favours granting the injunction.

These are not merely formal requirements. The moving party needs an evidentiary record capable of connecting the legal claim to the harm that is said to require immediate court intervention.

Where the requested order is mandatory in substance, the first stage is more demanding: the moving party generally must establish a strong prima facie case rather than merely a serious question to be tried.

See What do you have to prove to get an interlocutory injunction in Ontario? for the full test.

Can an injunction be obtained without notice to the other side?

Potentially, but without-notice relief is exceptional and carries additional procedural obligations.

Under Rule 40.02, an interlocutory injunction or mandatory order granted without notice may initially remain in force for no more than 10 days. An extension ordinarily proceeds on notice unless the court is satisfied that service is being evaded or other exceptional circumstances justify a further without-notice extension.

A party asking the court to act without hearing from the other side must also present the evidentiary record with particular care, including the applicable obligation of full and fair disclosure of material facts.

See Can you get an injunction without notice to the other side in Ontario? for the specialized requirements.

Is an injunction always temporary?

No.

An interlocutory injunction operates before the merits have been finally determined. A permanent injunction is different: it is final equitable relief granted after the parties’ legal rights have been adjudicated and the court determines that continuing injunctive relief is an appropriate final remedy.

The legal analysis is therefore different at the interim and final stages. A permanent injunction is not simply an interlocutory injunction that happens to last longer.

When might an injunction be appropriate in commercial litigation?

Injunctions can arise in many types of Ontario disputes, including matters involving:

• confidential information and trade secrets;
• non-compete or non-solicitation restrictions;
• threatened transfers of assets or property;
• shareholder and partnership disputes;
• real estate rights;
• preservation of evidence;
• contractual obligations; and
• urgent conduct that could undermine the effectiveness of a later judgment.

Whether an injunction is appropriate depends not simply on how serious the dispute is, but on the legal right asserted, the evidence of threatened harm, the adequacy of damages, the practical consequences of the proposed order, and the applicable legal test.

How does ME Law assess an injunction matter?

ME Law assesses the underlying cause of action, the urgency, available affidavit and documentary evidence, whether damages would provide an adequate remedy, and the precise conduct that needs to be restrained or required.

The analysis also considers whether the requested relief should proceed on notice or without notice, whether the order is mandatory in substance, what undertaking or procedural requirements may apply, and how the proposed interim relief fits with the litigation that will ultimately determine the parties’ rights.

The objective is not simply to move quickly. It is to determine whether urgent court intervention is legally available, supported by the evidence, and capable of being expressed in an order that the Superior Court of Justice can effectively supervise and enforce.

Contact ME Law if you are considering seeking or responding to an injunction in Ontario.

Ontario courts can grant different forms of injunctive relief depending on the stage of the proceeding, the urgency of the situation, and whether the applicant seeks to restrain conduct or require positive action. The principal forms include interlocutory injunctions, mandatory injunctions, and permanent injunctions. Injunctive relief may also be sought without notice in appropriate circumstances.

Ontario litigation also recognizes specialized and related remedies such as Mareva injunctions, Anton Piller orders, Norwich orders, and Certificates of Pending Litigation. These remedies serve different purposes and should not all be treated as interchangeable forms of injunction.

For ME Law’s broader practice in this area, see Injunctions.

What is an interlocutory injunction?

An interlocutory injunction is relief granted before the underlying case has been finally decided. Its purpose is generally to protect rights, prevent threatened harm, or preserve the effectiveness of the court’s eventual judgment while the litigation continues.

For a conventional interlocutory injunction, the court generally considers whether there is a serious question to be tried, whether refusing relief would cause irreparable harm, and where the balance of convenience lies.

Because the court is intervening before a final determination of the parties’ rights, the applicant must support the request with a proper evidentiary record rather than relying on urgency alone.

What is a without-notice injunction?

A without-notice injunction describes the procedure by which interim relief is initially sought without first giving the responding party an opportunity to appear. It is therefore better understood as a procedural route rather than a separate substantive category of injunction.

Without-notice relief may be available where the circumstances justify proceeding before notice can reasonably be given—for example, where advance notice could undermine the purpose of the requested relief.

The procedure carries additional safeguards. Under Rule 40.02 of the Rules of Civil Procedure, an interlocutory injunction or mandatory order granted without notice is generally limited to an initial period of no more than 10 days, subject to the Rule’s extension provisions.

See Can you get an injunction without notice to the other side in Ontario? for the specialized requirements.

What is a mandatory injunction?

A mandatory injunction requires a person or company to take positive action rather than simply refrain from particular conduct.

For example, an order may require a party to restore something, deliver property, remove an obstruction, return information, or take another specified step.

This distinction matters because where an interlocutory order is mandatory in substance, the first stage of the test is generally more demanding. The Supreme Court of Canada has held that the moving party must establish a strong prima facie case, rather than merely a serious question to be tried.

See What is a mandatory injunction in Ontario? for the different standard applicable to mandatory relief.

What is a permanent injunction?

A permanent injunction is final equitable relief granted after the parties’ rights have been finally adjudicated and the court determines that continuing injunctive protection is an appropriate remedy.

It is different from an interlocutory injunction because the court is no longer deciding whether temporary protection is justified while the merits remain unresolved.

A permanent injunction may restrain specified conduct on a continuing basis. Final relief may also be mandatory where the circumstances justify an order requiring positive action.

What are Mareva, Anton Piller, Norwich, and CPL remedies?

Ontario litigation also recognizes several specialized forms of protective relief.

A Mareva injunction may restrict dealings with assets where the stringent requirements for asset-freezing relief are satisfied.

An Anton Piller order is an exceptional evidence-preservation remedy used where there is a serious risk that important evidence may otherwise be destroyed or made unavailable.

A Norwich order is principally a disclosure remedy that may compel an innocent third party to provide targeted information needed to identify wrongdoing, trace transactions, or advance a claim.

A Certificate of Pending Litigation (CPL) is different again. It is a statutory land-related remedy used where an interest in specific real property is in question; it is not itself an injunction.

Ontario’s Commercial List publishes model orders for Mareva and Anton Piller relief and maintains leading authorities concerning Norwich orders.

See What other injunction-related remedies are available in Ontario? for a fuller explanation of these specialized remedies.

How does ME Law determine which form of injunctive relief is appropriate?

ME Law considers the underlying legal right, the conduct or risk that needs to be addressed, the urgency, the available evidence, whether notice can and should be given, and whether the proposed order would restrain conduct or require positive action.

The analysis also considers whether interim protection is required before the merits are determined, whether a specialized remedy such as a Mareva injunction is more appropriate, and how precisely the proposed court order can be framed and enforced.

Contact ME Law if you are considering seeking or responding to an injunction or another form of urgent protective relief in Ontario.

The usual test for an interlocutory injunction comes from the Supreme Court of Canada’s decision in RJR—MacDonald Inc. v. Canada (Attorney General). For a conventional interlocutory injunction that restrains conduct, the moving party generally must establish three things: a serious question to be tried, irreparable harm if the injunction is refused, and that the balance of convenience favours granting the order.

An interlocutory injunction is an exceptional remedy sought before the underlying dispute has been finally determined. The court is therefore being asked to intervene while the parties’ substantive rights remain unresolved. The evidence and the practical consequences of granting or refusing the order are central to the analysis.

1. Is there a serious question to be tried?

The first stage asks whether there is a genuine legal or factual issue requiring determination. Under the conventional RJR—MacDonald test, this is generally a relatively low threshold: the court does not normally conduct a full trial of the merits at the interlocutory stage.

The claim must nevertheless have sufficient legal and evidentiary substance to justify proceeding to the remaining stages of the injunction analysis.

Because “serious question to be tried” has its own legal meaning and important qualifications, see What does “serious question to be tried” mean in an Ontario injunction motion?.

2. Would refusing the injunction cause irreparable harm?

The moving party must next demonstrate that refusing interlocutory relief would expose it to harm that could not adequately be remedied later.

“Irreparable” refers principally to the nature of the harm, not simply its financial size. The issue is whether damages or another remedy available after trial would adequately address what occurred while the case was pending.

This requirement is often critical in urgent commercial disputes involving confidential information, restrictive covenants, business relationships, property, or other circumstances in which waiting until final judgment may materially change the parties’ positions.

See What does “irreparable harm” mean in an Ontario injunction motion? for the second branch of the test.

3. Where does the balance of convenience lie?

The third stage requires the court to compare the practical consequences of granting the injunction with the consequences of refusing it.

The court considers which party is likely to suffer greater harm from the interim decision pending final determination of the dispute. This assessment is contextual and can include the interests of the parties, preservation of the existing position, the effect of the proposed order, and other circumstances relevant to whether interlocutory relief is equitable.

The three parts of the test operate together. Establishing that there is a serious dispute does not, by itself, establish entitlement to an injunction.

See What does “balance of convenience” mean in an Ontario injunction motion? for the third branch of the analysis.

Does the same test apply to a mandatory injunction?

Not exactly.

Where the requested interlocutory order is mandatory in substance—meaning that it requires the responding party to take positive action—the first stage is more demanding.

In R. v. Canadian Broadcasting Corp., 2018 SCC 5, the Supreme Court of Canada held that the moving party generally must establish a strong prima facie case, rather than merely a serious question to be tried. The applicant must still demonstrate irreparable harm and that the balance of convenience favours granting the order.

This is why the practical effect of the requested relief matters. An order requiring a party to restore, deliver, remove, return, or otherwise take a positive step can engage the heightened mandatory-injunction standard.

See What is a mandatory injunction in Ontario? for that distinction.

What evidence is required on an injunction motion?

An injunction motion must be supported by evidence addressing the elements of the applicable test.

Depending on the case, that may include affidavit evidence, contracts, correspondence, financial information, corporate records, evidence concerning confidential information, and documents showing the urgency and expected consequences of granting or refusing relief.

The motion proceeds within Ontario’s Rules of Civil Procedure, while section 101 of the Courts of Justice Act gives the Superior Court of Justice authority to grant an interlocutory injunction or mandatory order where it appears just or convenient to do so.

How does ME Law assess an interlocutory injunction?

ME Law assesses the underlying legal claim, available evidence, urgency, anticipated harm, balance of convenience, and practical scope of the proposed order before determining whether interlocutory relief should be pursued or opposed.

The analysis also considers whether the requested order merely restrains particular conduct or is mandatory in substance, because that distinction can change the first-stage merits threshold and the evidentiary record required.

Contact ME Law if you are considering an interlocutory injunction or need to respond to an urgent injunction motion.

A serious question to be tried is the first part of the usual test for a conventional interlocutory injunction. It is generally a relatively low threshold. The court is not conducting the full trial on the injunction motion; it is making a preliminary assessment to determine whether the claim is not frivolous or vexatious and whether there is a genuine issue that should be preserved until the merits can be decided.

The concept comes from the injunction framework in RJR—MacDonald Inc. v. Canada (Attorney General). At this stage, the moving party does not normally have to prove that it will ultimately win the lawsuit. Instead, there must be a real legal or factual dispute capable of adjudication.

For the complete three-part framework, see What do you have to prove to get an interlocutory injunction in Ontario?.

What does the court look at at this stage?

The Ontario Superior Court of Justice may review the pleadings, affidavit evidence, contractual documents, correspondence, and other materials filed on the motion to determine whether the claim raises a genuine issue.

The court is generally not deciding credibility disputes or making final findings of fact at this preliminary stage. Those issues may ultimately require fuller evidence, cross-examinations, discovery, or trial.

The purpose of this first stage is therefore screening rather than final adjudication.

Does meeting this threshold mean the injunction will be granted?

No. Showing a serious question to be tried is only the first step.

The moving party must also address irreparable harm and the balance of convenience. A case can therefore raise a genuine legal issue and still fail to justify interlocutory relief.

This distinction is important because an injunction is an exceptional remedy. The existence of a legitimate lawsuit does not automatically establish that the court should intervene before the underlying dispute has been finally determined.

For the broader role of the remedy, see What is an injunction in Ontario?.

Is the threshold always this low?

No. The applicable first-stage threshold depends on the nature of the interlocutory order being requested.

Where the requested order is mandatory in substance—meaning that it requires the responding party to take positive action rather than simply restraining conduct—the moving party generally faces a more demanding standard.

In R. v. Canadian Broadcasting Corp., 2018 SCC 5, the Supreme Court of Canada held that an applicant seeking a mandatory interlocutory injunction must establish a strong prima facie case, rather than merely a serious question to be tried. This requires a strong likelihood, based on the law and the evidence presented, that the applicant will ultimately succeed at trial. The applicant must still establish irreparable harm and show that the balance of convenience favours granting the injunction.

The substance of the requested order matters more than the label attached to it. If the practical effect of the order is to require a party to take positive steps, the court must consider whether the heightened mandatory-injunction standard applies.

See What is a mandatory injunction in Ontario? for the different test applicable to mandatory relief.

How does ME Law assess the first stage of an injunction motion?

ME Law assesses the legal basis of the underlying claim together with the pleadings, affidavit evidence, documentary record, urgency, potential harm, and practical effect of the proposed order.

An important part of that assessment is determining whether the requested relief is a conventional interlocutory injunction governed by the serious-question threshold or is mandatory in substance and therefore engages the higher strong prima facie case standard.

That distinction can materially affect both the evidence required and the way the injunction motion should be framed.

Contact ME Law if you need advice about seeking or responding to an interlocutory injunction in Ontario

Irreparable harm is the second part of the usual test for a conventional interlocutory injunction. “Irreparable” refers to the nature of the harm, not simply its size. The question is whether the harm can be adequately compensated with money or otherwise effectively remedied later if the moving party ultimately succeeds.

The Supreme Court of Canada explained this principle in RJR—MacDonald Inc. v. Canada (Attorney General). The focus is on whether refusing interim relief could affect the applicant’s interests in a way that a later judgment would not adequately repair.

For the complete framework, see What do you have to prove to get an interlocutory injunction in Ontario?.

Does financial loss count as irreparable harm?

Ordinary financial loss will not usually amount to irreparable harm where it can be calculated and adequately compensated through damages after trial.

A large financial loss is therefore not automatically an irreparable one.

The analysis can be different where the loss cannot realistically be quantified, where compensation cannot practically be recovered, or where the consequences extend beyond an ordinary measurable monetary loss.

Depending on the circumstances, alleged harm may involve permanent market loss, serious damage to a business relationship or reputation, disclosure or misuse of confidential information, loss of a unique commercial opportunity, or another consequence that cannot readily be restored through a later damages award.

For disputes involving confidential information and restrictive covenants, see Confidential Information, Trade Secrets, and Restrictive Covenant Injunctions.

Is it enough to say that serious harm might occur?

No. The party seeking the injunction must support the alleged irreparable harm with evidence appropriate to the circumstances.

The court is deciding whether intervention is justified before the underlying litigation has been finally determined. The claimed harm should therefore be connected to what is sufficiently likely to occur if relief is refused rather than resting only on general concern, assertion, or speculation.

Depending on the case, the evidentiary record may include affidavit evidence, contracts, financial records, correspondence, corporate documents, evidence concerning confidential information, or other material demonstrating why a remedy available after trial would not adequately address the threatened harm.

Does proving irreparable harm guarantee an injunction?

No. Irreparable harm is only one part of the analysis.

Under the conventional RJR—MacDonald framework, the moving party must also establish a serious question to be tried and satisfy the balance of convenience analysis.

The court considers the three branches together when deciding whether interlocutory relief should be granted.

See What does “balance of convenience” mean in an Ontario injunction motion? for the next stage of the test.

Does the irreparable-harm requirement also apply to a mandatory injunction?

Yes. Where an interlocutory injunction is mandatory in substance, the first-stage merits threshold is more demanding, but the applicant must still establish irreparable harm and satisfy the balance of convenience.

The distinction concerns the first branch of the test: mandatory relief generally requires a strong prima facie case rather than merely a serious question to be tried.

See What is a mandatory injunction in Ontario? for that distinction.

How does ME Law assess irreparable harm?

ME Law examines the specific harm said to require immediate intervention, the evidence supporting that risk, whether the consequences can be quantified, whether damages would provide an adequate remedy, and how closely the threatened harm is connected to the legal rights asserted.

The analysis also considers timing. A potentially serious consequence is not necessarily irreparable if an effective remedy remains available later, while harm that cannot practically be reversed may support a stronger case for interim protection.

Contact ME Law if you are considering seeking an injunction or need to respond to a claim that irreparable harm requires urgent court intervention.

The balance of convenience is the third part of the usual test for a conventional interlocutory injunction. It asks which side should bear the interim risk while the underlying case remains unresolved. The court compares the practical consequences of granting the injunction with the consequences of refusing it.

The analysis comes from the framework in RJR—MacDonald Inc. v. Canada (Attorney General) and is contextual rather than mechanical. Even where there is a serious question to be tried and potential irreparable harm, the court must still determine whether the overall balance favours intervening before the merits have been finally decided.

For the complete framework, see What do you have to prove to get an interlocutory injunction in Ontario?.

What does the court compare?

The court considers the harm that may result to the moving party if the injunction is refused and the harm that may result to the responding party if the injunction is granted.

The analysis may include:

• the practical effect of the proposed order on each party;
• the nature and seriousness of the competing harms;
• whether either harm can later be compensated through damages;
• the existing position between the parties;
• the duration and scope of the proposed order;
• effects on third parties where relevant; and
• other circumstances bearing on whether interim relief would be equitable.

The court is not simply counting the number of disadvantages on each side. It is assessing the nature, likelihood, and practical significance of the competing consequences.

Does the status quo matter?

It can.

Preserving the existing position may be relevant because an interlocutory injunction is often intended to prevent the litigation from becoming practically meaningless before the court can determine the parties’ rights.

But preservation of the existing position is not an independent rule that automatically determines the result. The court must still assess the circumstances as a whole and determine which interim arrangement creates the more just and manageable risk while the proceeding continues.

Where the alleged harm itself is central to the analysis, see What does “irreparable harm” mean in an Ontario injunction motion?.

What if granting the injunction would seriously affect the responding party?

That effect matters directly to the balance of convenience.

For example, an injunction may restrict commercial activity, interfere with contractual rights, affect property, disrupt an existing business arrangement, or require operational changes before liability has been finally determined.

The court therefore considers not only the applicant’s need for protection but also the prejudice that interim relief may impose on the responding party.

This is one reason the scope and wording of the proposed order matter. A narrower order that addresses the demonstrated risk may create a different balance than an unnecessarily broad order.

Does the balance of convenience work differently for a mandatory injunction?

The balance-of-convenience requirement still applies where the requested interlocutory order is mandatory in substance and requires positive action.

The principal difference arises at the first stage of the test: mandatory interlocutory relief generally requires a strong prima facie case, rather than merely a serious question to be tried. The applicant must still establish irreparable harm and demonstrate that the balance of convenience favours the order.

See What is a mandatory injunction in Ontario? for that distinction.

How does ME Law assess the balance of convenience?

ME Law examines the practical consequences on both sides rather than treating the analysis as an abstract legal formula. That includes the evidence of threatened harm, the effect of the proposed order on each party, whether damages or other protections may reduce the risk, and whether the relief can be framed more narrowly.

The analysis is coordinated with the merits, irreparable harm, urgency, and the precise terms of the proposed order so that the court is given a clear picture of the competing interim risks.

For ME Law’s approach to interim injunctive relief, see Urgent Interlocutory and Interim Injunctions.

Contact ME Law if you are seeking or responding to an interlocutory injunction in Ontario.

A mandatory injunction is a court order that requires a person or company to take positive action rather than simply stop doing something. It may require a party to restore access, return property, reverse an interim step, or take another defined action. Because mandatory relief can alter the existing situation before the case is finally decided, the applicant generally faces a higher first-stage merits threshold.

How is a mandatory injunction different from an injunction that restrains conduct?

An injunction that restrains conduct prevents a party from taking or continuing a particular action. For example, it may prevent someone from disclosing confidential information, transferring property, soliciting customers, or taking another disputed step while litigation is pending.

A mandatory injunction instead requires the responding party to do something.

The distinction depends on the practical effect of the proposed order rather than simply how the requested relief is worded. The court considers whether compliance would require the responding party to take a positive course of action or merely refrain from acting.

For the broader distinction between different forms of injunctive relief, see What types of injunctions are available in Ontario?.

What must you prove to obtain a mandatory interlocutory injunction?

For an injunction that restrains conduct, the first stage of the conventional RJR—MacDonald framework generally asks whether there is a serious question to be tried.

A mandatory interlocutory injunction is different.

In R. v. Canadian Broadcasting Corp., 2018 SCC 5, the Supreme Court of Canada held that an applicant seeking mandatory interlocutory relief generally must establish a strong prima facie case at the first stage. This requires a stronger assessment of the merits than the ordinary serious-question threshold.

The applicant must also address the remaining elements of the injunction analysis, including irreparable harm and the balance of convenience.

The higher threshold reflects the potential consequences of requiring a party to change the existing situation before the underlying legal rights have been finally determined.

For the complete interlocutory-injunction framework, see What do you have to prove to get an interlocutory injunction in Ontario?.

What are examples of mandatory relief?

Depending on the dispute, a mandatory order may require a party to:

• restore access that has been removed;
• return or deliver property;
• reverse an interim change;
• perform a specific obligation; or
• take another positive step required by the court.

Whether the requested injunction is mandatory must be assessed by examining what the responding party would actually have to do if the order were granted.

What gives an Ontario court authority to make a mandatory order?

Section 101 of Ontario’s Courts of Justice Act gives the Superior Court of Justice authority to grant an interlocutory injunction or mandatory order where it appears just or convenient to do so.

The procedure is addressed by Rule 40 of the Rules of Civil Procedure. Rule 40.01 permits a party to a pending or intended proceeding to seek an interlocutory injunction or mandatory order by motion to a judge.

Rule 40 also addresses procedural issues associated with interim relief, including the moving party’s undertaking concerning damages that may result if an order is later determined to have been improperly granted.

For the broader purpose and operation of injunctions, see What is an injunction in Ontario?.

How does ME Law assess a mandatory injunction request?

ME Law assesses the precise conduct the proposed order would require, the strength of the underlying claim, the available evidence, urgency, potential irreparable harm, and the practical consequences of granting or refusing the requested relief.

An important early question is whether the proposed order is actually mandatory in substance. That classification matters because it can affect the merits threshold the applicant must satisfy before the court considers the remaining elements of the injunction test.

For ME Law’s approach to this form of relief, see Mandatory Injunctions and Status Quo Restoration Orders.

Contact ME Law if you are considering seeking a mandatory injunction or need to respond to a request for mandatory relief in Ontario.

Yes, but only in limited circumstances. In Ontario, Rule 40.02 of the Rules of Civil Procedure permits an interlocutory injunction or mandatory order to be granted without notice for a short period. Because the other side is not present to respond, the moving party must make full and fair disclosure of all material facts to the court.

For a broader explanation of injunctive relief, see What is an injunction in Ontario?.

How long can a without-notice injunction last?

Under Rule 40.02(1), an interlocutory injunction or mandatory order granted without notice may remain in effect for no more than 10 days.

If the moving party wants the order extended, the normal rule is that notice must then be given to every party affected by it.

An extension may itself be granted without notice only where the judge is satisfied that a party has been evading service or that other exceptional circumstances justify proceeding again without notice. A further without-notice extension is also limited to a maximum of 10 days.

For the distinction between without-notice, interlocutory, mandatory, and other forms of relief, see What types of injunctions are available in Ontario?.

What does “full and fair disclosure” require?

A without-notice motion places a particularly important obligation on the moving party because the judge initially hears only one side of the dispute.

Rule 39.01(6) expressly requires the moving party or applicant to make full and fair disclosure of all material facts. That obligation includes material facts relevant to the court’s decision, not simply the facts that favour the requested injunction.

The Rule also provides a significant consequence: failure to make full and fair disclosure is itself sufficient ground for setting aside the order obtained without notice.

The motion record and affidavit evidence therefore need to present the factual circumstances accurately and fairly, particularly where there are facts that the responding party might rely on if present.

Does the ordinary injunction test still matter?

Yes. Proceeding without notice does not eliminate the substantive requirements for obtaining injunctive relief.

Depending on the type of order sought, the moving party must still establish the applicable legal basis for an interlocutory or mandatory injunction. That can include the RJR—MacDonald considerations of a serious question to be tried, irreparable harm, and balance of convenience, or the stronger first-stage threshold applicable to certain mandatory orders.

See What do you have to prove to get an interlocutory injunction in Ontario? for the broader test.

What other obligations can apply?

Under Rule 40.03, a party moving for an interlocutory injunction or mandatory order must, unless the court orders otherwise, give an undertaking concerning damages that may result if the order is ultimately found to have caused compensable harm to the responding party.

That obligation is particularly important where an order is sought before the responding party has had an opportunity to be heard.

How does ME Law approach a without-notice injunction?

ME Law assesses whether proceeding without notice is procedurally justified, what immediate harm is alleged, what evidence must be placed before the court, and whether the proposed order is appropriately limited in scope and duration.

Particular attention must be given to the disclosure obligation. The objective is not simply to present the strongest facts for the applicant, but to ensure that the court receives the material information required to decide whether temporary relief should be granted in the absence of the responding party.

For ME Law’s approach to urgent without-notice relief, see Emergency Ex Parte Injunctive Relief.

Contact ME Law if you are considering seeking, extending, or responding to a without-notice injunction in Ontario.

In an ordinary Ontario civil matter, a without-notice interlocutory injunction or mandatory order may initially be granted for no more than 10 days. If the order needs to continue beyond that period, the normal rule is that the affected parties must receive notice. A further extension without notice is available only in limited circumstances and is itself capped at another 10 days.

Scenario A — The initial without-notice order

Under Rule 40.02(1) of the Rules of Civil Procedure, the Superior Court of Justice may grant an interlocutory injunction or mandatory order on a motion without notice for a period not exceeding 10 days.

The 10-day limit reflects the temporary nature of this form of relief. The responding party has not yet had an opportunity to appear and present its position, so a without-notice order is not intended to continue indefinitely without further court supervision.

For when a party may seek this type of order in the first place, see Can you get an injunction without notice to the other side in Ontario?.

Scenario B — The applicant wants the injunction to continue

If the applicant wants the injunction or mandatory order extended, Rule 40.02(2) generally requires the extension motion to proceed on notice to every party affected by the order.

At that stage, the responding party has an opportunity to challenge the evidence, oppose continuation of the order, seek changes to its terms, or ask that the injunction be set aside.

The fact that a court granted the initial order without notice does not mean that the applicant is automatically entitled to have it continued.

Scenario C — A further extension is sought without notice

A further without-notice extension is exceptional.

Rule 40.02 allows it where the judge is satisfied that a party has been evading service or that other exceptional circumstances justify extending the order without notice. Even then, the further without-notice extension may not exceed another 10 days.

This means the rule is not an automatic sequence of repeated 10-day extensions. The ordinary expectation after the initial period is that affected parties receive notice.

Does the 10-day rule apply to every injunction?

No. Rule 40.02 specifically governs interlocutory injunctions and mandatory orders sought without notice in this context. The Rule also provides that its 10-day provisions do not apply to an injunction in a labour dispute under section 102 of the Courts of Justice Act.

For the distinction between interlocutory, mandatory, permanent, and other forms of relief, see What types of injunctions are available in Ontario?.

What happens during the period of the order?

The moving party must prepare for the next procedural step rather than simply rely on the temporary order. That may involve serving the responding parties, preparing additional affidavit evidence, responding to challenges to the original order, and seeking continuation or modification of the relief.

Under Rule 40.03, the moving party will also ordinarily have given an undertaking concerning damages that may result if the injunction is later determined to have caused compensable loss to the responding party.

For the broader injunction framework, see What is an injunction in Ontario?.

ME Law assesses the duration of the existing order, service requirements, the evidence required for any extension, and the risks associated with continuing or opposing the relief.

For ME Law’s approach to urgent without-notice relief, see Emergency Ex Parte Injunctive Relief.

Contact ME Law if you need advice about obtaining, extending, varying, or responding to a without-notice injunction in Ontario.

Not necessarily. Ontario Rule 40.01 of the Rules of Civil Procedure allows an interlocutory injunction or mandatory order to be sought by a party to a pending or intended proceeding. This means the underlying court proceeding does not always have to be fully underway before urgent injunctive relief is requested, but the injunction must be connected to a proceeding that already exists or is intended.

What does “pending or intended proceeding” mean?

A pending proceeding is one that has already been commenced.

An intended proceeding means the party seeking the injunction intends to pursue the underlying legal claim even though the proceeding may not yet have progressed through the ordinary litigation steps.

This distinction matters because injunctions are generally interim remedies. The court is being asked to protect a position, restrain conduct, or require action while the underlying rights of the parties remain to be determined.

Rule 40.01 expressly permits a motion for an interlocutory injunction or mandatory order in both pending and intended proceedings.

For the broader purpose of this remedy, see What is an injunction in Ontario?.

Why might an injunction be needed before the ordinary lawsuit progresses?

Some disputes cannot wait for the usual sequence of pleadings, documentary production, discovery, and trial.

For example, a party may allege that confidential information is about to be disclosed, property or assets are about to be transferred, contractual restrictions are being breached, or another event may occur before the dispute can be determined in the ordinary course.

In those circumstances, the Superior Court of Justice may be asked to intervene on an interim basis. Section 101 of the Courts of Justice Act gives the court authority to grant an interlocutory injunction or mandatory order where it appears just or convenient to do so.

Can the injunction be sought without notice at the same time?

Potentially, but that is a separate issue.

Where the circumstances justify proceeding without advance notice to the responding party, Rule 40.02 governs the duration and extension of a without-notice interlocutory injunction or mandatory order.

See Can you get an injunction without notice to the other side in Ontario? for those requirements.

The fact that a proceeding is only intended does not, by itself, mean that the motion should proceed without notice.

Do you still have to satisfy the injunction test?

Yes. Rule 40.01 addresses when and how the motion may be brought; it does not remove the substantive requirements for obtaining the injunction.

Depending on the relief requested, the applicant may still need to establish the applicable elements concerning the merits of the underlying claim, irreparable harm, and the balance of convenience.

For the conventional interlocutory-injunction framework, see What do you have to prove to get an interlocutory injunction in Ontario?

How does ME Law assess an injunction before a proceeding is fully underway?

ME Law assesses the underlying cause of action, urgency, available evidence, the conduct that needs to be restrained or compelled, and whether the proposed injunction can properly be connected to a pending or intended proceeding.

The analysis also includes what materials are required for the motion, whether notice should be given, and how the requested interim relief fits with the proceeding that will determine the parties’ substantive rights.

For ME Law’s approach to interim relief sought at the outset of litigation, see Urgent Interlocutory and Interim Injunctions.

Contact ME Law if you need advice about seeking urgent injunctive relief before or at the outset of an Ontario proceeding.

For ordinary civil and commercial matters, injunction motions are generally brought before the Ontario Superior Court of Justice. The Courts of Justice Act gives the Superior Court authority to grant interlocutory injunctions and mandatory orders, while equitable relief is generally outside the jurisdiction of the Small Claims Court.

Why are injunctions usually brought in the Superior Court of Justice?

Section 101(1) of the Courts of Justice Act provides that the Superior Court of Justice may grant an interlocutory injunction or mandatory order where it appears just or convenient to do so.

The procedure for seeking that relief is governed principally by Rule 40 of the Rules of Civil Procedure. Depending on the circumstances, the motion may be brought in a pending or intended proceeding and may involve urgent, interlocutory, mandatory, or without-notice relief.

For an overview of the remedy itself, see What is an injunction in Ontario?.

Can the Small Claims Court grant an injunction?

Generally, no.

Section 96(3) of the Courts of Justice Act states that only the Court of Appeal and the Superior Court of Justice, excluding the Small Claims Court, may grant equitable relief unless another law provides otherwise. Injunctions are equitable remedies.

The Small Claims Court instead has statutory jurisdiction principally over claims for payment of money and recovery of possession of personal property within its monetary jurisdiction. A dispute requiring injunctive relief therefore raises a fundamentally different jurisdictional issue.

What role does the Court of Appeal have?

The Court of Appeal for Ontario also has jurisdiction to grant equitable relief under section 96(3) of the Courts of Justice Act. However, ordinary injunction applications arising at the outset or during civil and commercial litigation are generally dealt with in the Superior Court of Justice.

The Court of Appeal becomes relevant in an appellate context rather than serving as the usual first-instance forum for an ordinary commercial injunction motion.

Does urgency change which court has jurisdiction?

Urgency can change how quickly and on what notice the motion is brought, but it does not normally transform an ordinary civil injunction into a Small Claims Court matter.

Where urgent relief is sought without advance notice, Rule 40.02 imposes specific requirements and limits. See Can you get an injunction without notice to the other side in Ontario?.

Regardless of urgency, the applicant must also establish the substantive legal basis for the requested relief. See What do you have to prove to get an interlocutory injunction in Ontario?.

How does ME Law assess where an injunction motion should be brought?

ME Law considers the underlying proceeding, the relief requested, the court’s jurisdiction, urgency, applicable procedural rules, and whether the proposed order is interlocutory, mandatory, or otherwise equitable in nature.

Identifying the proper court and procedure at the outset is particularly important in an urgent matter, where filing in the wrong forum can delay the relief being sought.

For ME Law’s broader injunction practice, see Injunctions.

Contact ME Law if you are considering seeking or responding to an injunction in Ontario.

Generally, no. Ontario’s Courts of Justice Act provides that equitable relief may be granted only by the Court of Appeal and the Superior Court of Justice, expressly excluding the Small Claims Court, unless another law provides otherwise. Because an injunction is an equitable remedy, an ordinary Small Claims Court proceeding cannot generally be used to obtain one.

Why can’t Small Claims Court issue an injunction?

The limitation comes directly from section 96(3) of the Courts of Justice Act.

Small Claims Court is a branch of the Superior Court of Justice, but its jurisdiction is more limited. Section 23 of the Act principally gives it jurisdiction over claims for the payment of money and the recovery of possession of personal property within its prescribed jurisdictional limits.

An injunction is different. Instead of simply awarding money or ordering recovery of personal property, it directs a party to stop certain conduct or, in the case of a mandatory order, to take positive action.

For the basic distinction, see What is an injunction in Ontario?

What if my claim is small but I also need an injunction?

The monetary value of a dispute does not by itself determine whether Small Claims Court can provide every remedy a party needs.

For example, a dispute may involve a relatively modest amount of money but also require an order preventing disclosure of confidential information, restraining disputed conduct, preserving rights, or compelling action. If equitable relief is genuinely required, the appropriate court and form of proceeding need to be considered before the claim is commenced.

For more on jurisdiction, see Which court usually hears injunction motions in Ontario?

Where is an injunction normally sought instead?

For ordinary Ontario civil and commercial disputes, injunction applications are generally brought in the Superior Court of Justice.

Section 101 of the Courts of Justice Act gives that court authority to grant an interlocutory injunction or mandatory order where it appears just or convenient to do so, while Rule 40 of the Rules of Civil Procedure governs the procedure for obtaining that relief.

The applicant must still satisfy the applicable substantive injunction test. See What do you have to prove to get an interlocutory injunction in Ontario?

How does ME Law assess jurisdiction before an injunction motion?

ME Law considers the remedies actually required, the nature and value of the underlying dispute, urgency, the applicable court’s jurisdiction, and the procedural steps necessary to obtain effective relief.

This assessment is important before filing because choosing a forum based only on the monetary amount of the claim can create problems where the dispute also requires equitable relief that Small Claims Court cannot ordinarily grant.

For ME Law’s broader practice in seeking and responding to equitable court orders, see Injunctions.

Contact ME Law if your Ontario dispute may require an injunction or another form of equitable relief.

Usually, yes. Under Rule 40.03 of Ontario’s Rules of Civil Procedure, a party seeking an interlocutory injunction or mandatory order must, unless the court orders otherwise, give an undertaking as to damages. This means the moving party accepts that the court may later order compensation if granting the injunction caused damage to the responding party for which compensation should be paid.

Why is an undertaking as to damages required?

An interlocutory injunction can affect the responding party before the underlying lawsuit has been finally decided.

For example, an injunction may prevent a transaction, restrict business activity, preserve property, or require a party to take action while the dispute is still pending. If the order later proves to have caused compensable harm, the undertaking provides a mechanism through which the court can address that harm.

The undertaking therefore reflects the provisional nature of interlocutory relief: the Superior Court of Justice may intervene before trial, but the party asking for that intervention ordinarily accepts potential financial responsibility for damage resulting from the order.

For the broader purpose of interim relief, see What is an injunction in Ontario?.

Does giving an undertaking mean you automatically have to pay damages?

No. Giving the undertaking does not mean that the moving party immediately pays money to the responding party or that damages will automatically be awarded.

Rule 40.03 requires the moving party to undertake to abide by any order concerning damages that the court may later make if it ultimately appears that granting the injunction caused damage for which the moving party ought to compensate the responding party.

The undertaking is therefore a potential future obligation, not an immediate damages award.

Can the court dispense with the undertaking?

Yes. Rule 40.03 expressly states that the undertaking is required unless the court orders otherwise.

That makes the undertaking the ordinary rule for a motion seeking an interlocutory injunction or mandatory order, while preserving the court’s discretion in an appropriate case.

The requirement is separate from the substantive injunction test. An applicant must still satisfy the applicable requirements concerning the merits of the claim, irreparable harm, and the balance of convenience.

See What do you have to prove to get an interlocutory injunction in Ontario? for that analysis.

Does the undertaking also apply to without-notice injunctions?

Rule 40.03 applies to a motion for an interlocutory injunction or mandatory order. Where relief is sought without notice, the undertaking can be particularly significant because the responding party may initially be affected by the order without having had an opportunity to present its position.

For the additional procedural requirements that apply in that situation, see Can you get an injunction without notice to the other side in Ontario?.

How does ME Law assess the undertaking when seeking an injunction?

ME Law considers the undertaking as part of the overall risk analysis before urgent relief is sought. That includes the potential effect of the proposed order on the responding party, the duration and scope of the relief, the evidence supporting the motion, and the potential financial consequences if the injunction later causes compensable damage.

The undertaking should therefore be considered alongside the expected benefit of obtaining interim protection rather than treated as a procedural formality.

For ME Law’s broader approach to interlocutory injunctive relief, see Urgent Interlocutory and Interim Injunctions.

Contact ME Law if you are considering seeking or responding to an interlocutory injunction or mandatory order in Ontario.

Injunction motions are highly evidence-driven. The strongest record usually provides a clear chronology, focused affidavit evidence, and contemporaneous documents showing the legal right being asserted, the urgency of the situation, the harm likely to occur if relief is refused, and why a later damages award may not adequately address that harm.

What should the affidavit evidence establish?

An affidavit should give the court a coherent factual record rather than simply repeat legal conclusions such as “the harm is irreparable” or “the matter is urgent.”

Depending on the dispute, the evidence may address:

• the relationship between the parties and the legal right at issue;
• the events that created the dispute;
• what conduct has occurred or is threatened;
• why immediate intervention is requested;
• what harm is expected if the injunction is refused; and
• the practical consequences of granting the proposed order.

Under Rule 39.01(4) of the Rules of Civil Procedure, an affidavit used on a motion may include statements based on information and belief, provided the source of the information and the fact of the belief are specified.

What documents can strengthen an injunction record?

Contemporaneous documents can be particularly important because they may independently support the chronology and factual assertions in the affidavit.

Depending on the case, the motion record may include contracts, emails, text messages, corporate records, financial information, photographs, transaction documents, evidence concerning confidential information, or communications showing that disputed conduct is imminent.

The evidence should connect directly to the applicable injunction test. For example, if the moving party alleges irreparable harm, the record should explain concretely why damages would not provide an adequate remedy rather than relying on speculation.

See What does “irreparable harm” mean in an Ontario injunction motion? for that requirement.

Can affidavit evidence be challenged?

Yes.

Under Rule 39.02, a party to a motion or application may, after satisfying the applicable procedural requirements, cross-examine the deponent of an affidavit served by an adverse party.

That makes the accuracy and discipline of affidavit evidence particularly important. Statements made in an affidavit may be tested through cross-examination, and inconsistencies between the affidavit, documents, and examination evidence can affect the strength of the motion record.

For the full injunction framework that the evidence must support, see What do you have to prove to get an interlocutory injunction in Ontario?.

What changes if the motion is brought without notice?

The evidentiary obligation becomes especially important where the responding party is not present.

Rule 39.01(6) requires the moving party on a without-notice motion or application to make full and fair disclosure of all material facts. Failure to do so is itself sufficient ground for setting aside an order obtained without notice.

See Can you get an injunction without notice to the other side in Ontario? for the separate procedural requirements.

How does ME Law prepare an injunction record?

ME Law focuses the evidentiary record on the specific relief requested and the legal test that must be satisfied. That means identifying the strongest admissible evidence, building a clear chronology, supporting factual assertions with documents where available, and anticipating issues that may arise on cross-examination.

The objective is to give the Superior Court of Justice a focused record that addresses the merits, urgency, irreparable harm, balance of convenience, and practical effect of the proposed order without burdening the motion with unnecessary material.

For ME Law’s approach to building the evidentiary record for urgent interim relief, see Urgent Interlocutory and Interim Injunctions.

Contact ME Law if you need advice about preparing or responding to evidence on an Ontario injunction motion.

A party affected by an injunction obtained without notice can move promptly to have the order set aside or varied. Under Rule 37.14 of Ontario’s Rules of Civil Procedure, the responding party must serve its notice of motion forthwith after the order comes to its attention and identify the first available hearing date that is at least three days after service. The court may then set aside or vary the order on terms it considers just.

How does the responding party challenge the order?

The responding party does not have to wait until the underlying lawsuit reaches trial.

Under Rule 37.14(1), a party or other person affected by an order obtained on a motion without notice may bring a motion asking the court to set it aside or vary its terms.

The motion must be served promptly once the order comes to the affected person’s attention. The Rule also requires the notice of motion to name the first available hearing date that is at least three days after service.

For the rules governing the original without-notice application, see Can you get an injunction without notice to the other side in Ontario?.

What can the court do when the challenge is heard?

Under Rule 37.14(2), the court may set aside or vary the order on such terms as are just.

The result is therefore not limited to an all-or-nothing choice.

Depending on the circumstances, the Superior Court of Justice may leave the injunction in place, modify its scope or terms, or set it aside. The responding party can put forward its own evidence and arguments concerning the factual record, urgency, legal merits, alleged irreparable harm, and practical consequences of continuing the order.

For the substantive injunction framework, see What do you have to prove to get an interlocutory injunction in Ontario?.

Can the original without-notice evidence be challenged?

Yes. One important issue can be whether the moving party complied with the heightened disclosure obligations that apply when the other side was not present.

Rule 39.01(6) requires a party seeking relief without notice to make full and fair disclosure of all material facts. A failure to satisfy that obligation can itself provide a basis for setting aside the order.

The responding party may also challenge the affidavit evidence, documents, chronology, alleged urgency, or assertions of irreparable harm that supported the original motion.

This is why a without-notice injunction should not be treated as a final determination of the dispute. It is temporary relief obtained before the affected party has had the opportunity to present its position.

Does challenging the injunction automatically suspend it?

Not simply because a challenge has been started.

The responding party needs to seek appropriate relief from the court. Until the order is varied, set aside, expires, or is otherwise dealt with, its terms must be taken seriously.

Without-notice injunctions are themselves subject to strict duration rules. See How long does a without-notice injunction last in Ontario?.

How does ME Law respond to a challenged without-notice order?

ME Law reviews the order, the original motion record, affidavit evidence, disclosure made to the court, timing of service, and the substantive basis for the relief.

The immediate objective is to determine whether the order should be maintained, narrowed, varied, or set aside and what evidence is required for the return hearing or Rule 37.14 motion.

For ME Law’s approach to urgent without-notice relief and challenges to such orders, see Emergency Ex Parte Injunctive Relief.

Contact ME Law if you have obtained a without-notice injunction or have been served with an order that you need to challenge in Ontario.

In genuinely urgent circumstances, injunction relief in Ontario can be sought on an expedited basis, including without notice where the legal and procedural requirements for doing so are met. There is no universal number of hours or days: timing depends on the urgency, the required notice, the readiness of the evidence, court availability, and the nature of the relief requested.

What makes an injunction motion urgent?

Urgency generally arises where waiting for the ordinary litigation timetable could allow the threatened harm to occur before the court can intervene.

Examples may include threatened disclosure of confidential information, imminent disposition of property or assets, continuing conduct alleged to cause irreparable harm, or another time-sensitive event that could materially affect the parties’ rights.

Under Rule 40.01 of the Rules of Civil Procedure, an interlocutory injunction or mandatory order may be sought by motion in a pending or intended proceeding. This allows interim relief to be pursued even where the underlying proceeding has not progressed through the ordinary stages of litigation.

For ME Law’s broader approach to urgent interim relief, see Urgent Interlocutory and Interim Injunctions.

How quickly can the court act in different situations?

Scenario A — Immediate threat and without-notice relief is justified.
A party may seek an urgent injunction without first giving notice to the responding party where the circumstances legally justify that procedure. A without-notice injunction is subject to the limits in Rule 40.02, including an initial maximum duration of 10 days.

See Can you get an injunction without notice to the other side in Ontario?.

Scenario B — Urgent relief is required, but notice can be given.
The moving party may seek an expedited hearing on notice. How quickly the motion can actually be heard will depend on factors including the court’s scheduling process, the urgency demonstrated, the materials required, and the responding party’s opportunity to address the motion.

Scenario C — The dispute is important but not genuinely urgent.
The motion will generally proceed through the ordinary procedural and scheduling requirements rather than receiving emergency treatment.

Do the same urgent-motion procedures apply across Ontario?

Not necessarily.

The Superior Court of Justice has province-wide practice directions, but parties must also consult the applicable regional practice directions, which may impose additional requirements for requesting an urgent hearing. Those requirements may include information about the nature of the urgency, the relief requested, the notice position, whether the materials are ready, and the estimated hearing time.

The Ontario Superior Court expressly directs litigants to consult both the provincial and applicable region-specific practice directions.

This is important because the procedure for placing an urgent matter before the court can vary by region. For example, the current Central West practice direction requires an urgent-hearing request to address urgency, relief, notice, readiness of materials, time estimate, and a draft order.

Does urgency reduce the evidence you need?

No. A request for speed does not lower the substantive injunction test or eliminate the need for a proper evidentiary record.

The moving party should be prepared to establish the relevant legal right, the factual chronology, the urgency, and the harm said to justify interim relief. Depending on the type of injunction, the court will also consider the applicable requirements concerning the merits, irreparable harm, and the balance of convenience.

See What evidence matters most on an injunction motion in Ontario? and What do you have to prove to get an interlocutory injunction in Ontario?.

How does ME Law approach an urgent injunction?

ME Law assesses first whether the circumstances justify urgent treatment and whether notice can or should be given. The next priority is assembling a disciplined motion record: the evidence, chronology, legal basis for relief, draft order, and procedural materials needed to place the issue before the Superior Court of Justice.

In urgent injunction work, speed matters, but speed without the necessary evidentiary and procedural foundation can weaken the application.

Contact ME Law if circumstances may require urgent injunctive relief in Ontario.

Yes. On a motion under Rule 40.01 of Ontario’s Rules of Civil Procedure, Rule 40.04 requires each party to serve a factum. The moving party must generally serve and file its factum, with proof of service, at least seven days before the hearing, while the responding party must generally do so at least four days before the hearing.

Those timelines may be affected by a court order, an applicable practice direction, or case-specific scheduling directions, particularly where urgent relief is sought.

What is a factum on an injunction motion?

A factum is the party’s written legal argument. It organizes the facts, identifies the governing law, and explains why the court should grant or refuse the requested injunction.

Under Rule 40.04(1), the factum must meet the requirements of Rule 4.06.1. That rule requires a concise argument stating the facts and law relied on by the party and imposes requirements concerning citations to legal authorities.

On an injunction motion, the factum will ordinarily connect the evidence in the motion record to the legal test the court must apply.

See What do you have to prove to get an interlocutory injunction in Ontario?.

When is the moving party’s factum due?

Under Rule 40.04(2), the moving party must generally serve its factum and file it with proof of service in the court office where the motion will be heard at least seven days before the hearing.

The factum should work together with the affidavit evidence, documentary exhibits, and requested order. It is not a substitute for evidence: factual propositions relied upon in the argument must have an appropriate foundation in the motion record.

For more on building that record, see What evidence matters most on an injunction motion in Ontario?.

When is the responding party’s factum due?

Under Rule 40.04(3), the responding party must generally serve and file its factum, with proof of service, at least four days before the hearing.

The responding factum may challenge the legal test, the moving party’s characterization of the evidence, the alleged urgency or irreparable harm, the scope of the requested order, or the balance of convenience.

What happens in an urgent injunction motion?

Urgency does not make the factum requirement irrelevant.

Injunction motions can arise on compressed timelines, particularly where immediate interim relief is sought, but the parties still need to address the applicable procedural requirements and any directions made by the court concerning filing, service, scheduling, and the hearing itself.

The practical challenge is therefore to prepare a focused legal argument and evidentiary record quickly enough to match the urgency of the relief sought.

See How quickly can injunction relief be sought in Ontario?.

How does ME Law prepare an injunction factum?

ME Law structures an injunction factum around the precise relief requested, the evidentiary record, the applicable injunction test, and the authorities that determine the motion.

The objective is to give the Superior Court of Justice a concise roadmap showing what the evidence establishes, how the governing legal principles apply, and why the proposed order should—or should not—be made.

For ME Law’s approach to urgent injunction motion preparation, see Urgent Interlocutory and Interim Injunctions.

Contact ME Law if you are preparing for or responding to an injunction motion in Ontario.

Breaching an injunction can lead to civil contempt proceedings. Because an injunction is a court order rather than simply an agreement between the parties, non-compliance can expose the person in breach to court-imposed sanctions intended to enforce the order and protect the administration of justice.

A contempt finding is serious and is not automatic merely because one party alleges that an injunction was breached. The party seeking contempt must establish the required elements beyond a reasonable doubt.

What must be proved for civil contempt?

The Supreme Court of Canada set out the governing framework in Carey v. Laiken, 2015 SCC 17.

Civil contempt generally requires proof beyond a reasonable doubt that:

• the order alleged to have been breached stated clearly and unequivocally what the person was required to do or refrain from doing;
• the person alleged to be in contempt had actual knowledge of the order; and
• the person intentionally did the act prohibited by the order, or intentionally failed to do the act required by it.

The third requirement does not mean that the person must have intended to defy the court or interfere with the administration of justice. The relevant question is whether the act or omission itself was intentional and breached a clear order known to that person.

This is one reason the wording of an injunction matters. An order that is vague, uncertain, or overly broad can create significant enforcement problems.

For the broader role and structure of injunctive relief, see What is an injunction in Ontario?.

How is an injunction enforced through contempt proceedings?

Rule 60.11 of Ontario’s Rules of Civil Procedure governs contempt orders used to enforce an order requiring a person to do an act, other than payment of money, or to abstain from doing an act.

A contempt motion is brought before a judge in the proceeding in which the order was made. Rule 60.11 also contains specific procedural safeguards, including requirements concerning service of the contempt motion and the affidavit evidence used to support it.

Because contempt carries potentially serious consequences, the evidentiary record must establish precisely what the injunction required, what the alleged contemnor knew, and what conduct is said to have breached the order.

For more on injunction evidence generally, see What evidence matters most on an injunction motion in Ontario?.

What can the court do after finding contempt?

The court has substantial discretion under Rule 60.11.

Depending on the circumstances, the court may order the person in contempt to comply with the order, refrain from further prohibited conduct, pay a fine or costs, or comply with other terms considered necessary. In sufficiently serious cases, imprisonment is also available.

The appropriate response depends on matters such as the nature of the breach, its consequences, subsequent compliance, whether the breach can be remedied, and the circumstances surrounding the conduct.

A contempt motion should therefore not be treated simply as another ordinary procedural motion. The finding itself can have serious consequences, and the court retains discretion both in determining whether contempt should be found and in determining the appropriate sanction.

Can someone simply ignore an injunction while challenging it?

Generally, no.

A party who believes an injunction was wrongly granted, is too broad, or should no longer remain in effect should use the available court procedures to seek to vary, set aside, stay, or appeal the order, where the applicable procedural route permits it.

Until an order is changed or set aside, parties should not assume that disagreement with the order excuses non-compliance.

For the appellate context, see Can injunction orders be appealed in Ontario?.

How does ME Law approach an alleged breach of an injunction?

ME Law first examines the precise wording of the order, evidence of knowledge, the conduct alleged to constitute the breach, and whether the requirements for civil contempt can actually be established.

For parties seeking enforcement, the objective is to build a disciplined record showing exactly how the order was breached and what enforcement response is appropriate.

For parties accused of non-compliance, the analysis includes whether the order was sufficiently clear, whether the alleged conduct falls within its terms, whether the required knowledge and intentional conduct can be proved, and what procedural or remedial response is available.

For ME Law’s broader approach to obtaining and enforcing injunctive relief, see Injunctions.

Contact ME Law if you are seeking to enforce an injunction or responding to an allegation that an Ontario court order has been breached.

Yes, but the appeal route depends primarily on whether the injunction order is interlocutory or final, and whether a specific statutory appeal route applies. An order made on a motion for an interlocutory injunction is generally treated as an interlocutory order. An appeal from an interlocutory order of a Superior Court judge ordinarily requires leave to appeal to the Divisional Court.

Where do you appeal an interlocutory injunction order?

Section 19(1)(b) of Ontario’s Courts of Justice Act provides that an appeal from an interlocutory order of a judge of the Superior Court of Justice lies to the Divisional Court with leave.

Ontario’s current Divisional Court guidance specifically identifies an order on a motion for an interlocutory injunction as an example of an interlocutory order.

Leave is therefore not automatic. The proposed appellant must first bring a motion for leave under Rule 62.02 of the Rules of Civil Procedure.

For the nature of the underlying relief, see What is an injunction in Ontario?.

What must be shown to obtain leave to appeal?

Rule 62.02 imposes a specific threshold for leave.

Leave may be granted where there is a conflicting decision on the issue and the Divisional Court considers it desirable to grant leave, or where there is good reason to doubt the correctness of the order and the proposed appeal raises matters sufficiently important to justify appellate review.

This means dissatisfaction with the result alone does not create an automatic right to appeal an interlocutory injunction order.

A motion for leave from an interlocutory order must generally be served within 15 days after the order was made, subject to any applicable statutory exception.

What if the injunction order is final rather than interlocutory?

The route can be different.

Under section 6(1)(b) of the Courts of Justice Act, appeals from final orders of Superior Court judges generally lie to the Court of Appeal for Ontario, subject to matters assigned to the Divisional Court by section 19 or another statute.

Whether an order is legally final or interlocutory can therefore be important before any appeal is started. The label placed on the order is not the only consideration; its legal effect must be assessed.

ME Law also acts in appellate proceedings. See Ontario Court of Appeal Counsel.

Are labour injunction appeals different?

Yes. Injunctions arising from a labour dispute under section 102 of the Courts of Justice Act are a statutory exception to the ordinary interlocutory appeal route.

Under section 102(10), an appeal from an order made under section 102 lies directly to the Court of Appeal without leave. The ordinary requirement to obtain leave to the Divisional Court for an interlocutory order therefore does not govern an appeal from an injunction order made under this specialized labour-dispute regime.

See Are labour injunctions different from ordinary civil injunctions in Ontario? for the specialized notice, evidence, timing, and appeal rules that apply under section 102.

Does appealing an injunction automatically suspend the order?

Not necessarily.

Starting an appeal or seeking leave does not automatically mean the injunction stops operating. Depending on the applicable appeal and stay rules, a party may need to seek a stay pending appeal.

That distinction can be particularly important with an injunction because the order may regulate conduct immediately while appellate proceedings are underway.

If the order was obtained without notice, there may also be a more immediate procedure for asking the court to set it aside or vary it under Rule 37.14 rather than treating an appeal as the only available response. See What happens if the other side challenges a without-notice injunction in Ontario?.

How does ME Law assess an appeal from an injunction order?

ME Law first determines whether the order is interlocutory or final, whether a specialized statutory appeal route applies, identifies the correct appellate court, assesses whether leave is required, and reviews the applicable deadline.

The analysis also considers the proposed grounds of appeal, whether the order should be stayed while appellate relief is pursued, and the practical consequences of leaving the injunction in force during the appellate process.

Contact ME Law if you are considering appealing, defending, or seeking a stay of an injunction order in Ontario.

An interlocutory injunction is temporary relief granted before the underlying dispute has been finally determined. A permanent injunction is final equitable relief granted after the parties’ legal rights have been adjudicated. The distinction affects both the legal test and the evidentiary basis on which the court acts.

What is an interlocutory injunction?

An interlocutory injunction operates while the underlying proceeding is still pending. Its purpose is generally to protect rights, prevent harm, or preserve an appropriate position until the court can finally determine the dispute.

Because the court has not yet finally adjudicated the parties’ substantive rights, a conventional interlocutory injunction that restrains conduct is generally assessed under the RJR—MacDonald framework.

The moving party must ordinarily establish:

• a serious question to be tried;
• irreparable harm if interim relief is refused; and
• that the balance of convenience favours granting the injunction.

For the complete framework, see What do you have to prove to get an interlocutory injunction in Ontario?.

The applicable first-stage threshold can be more demanding where the requested interlocutory order requires positive action rather than merely restraining conduct.

What is a permanent injunction?

A permanent injunction is different because it forms part of the court’s final disposition of the parties’ rights.

The Ontario Court of Appeal explained the distinction in 1711811 Ontario Ltd. (AdLine) v. Buckley Insurance Brokers Ltd., 2014 ONCA 125. A court considering permanent injunctive relief is no longer deciding whether temporary protection should be imposed while the merits remain unresolved. The underlying legal rights must instead have been finally determined.

In that setting, the court considers whether:

• the claimant has established the legal right on which the requested relief depends;
• damages or another remedy would be inadequate; and
• there is any equitable or discretionary reason why the injunction should not be granted.

A successful claim does not therefore make a permanent injunction automatic. Injunctive relief remains an equitable remedy and the proposed order must be justified by the rights that have actually been established.

See Can you get a permanent injunction after trial in Ontario? for the final-relief analysis.

Why does the distinction matter in practice?

The distinction determines more than how long the order lasts.

On an interlocutory motion, the court must decide whether intervention is justified before the merits have been finally determined. Issues such as irreparable harm and balance of convenience help the court manage that interim risk.

For a permanent injunction, the court has determined the underlying rights and must decide whether continuing court-ordered relief is an appropriate final remedy.

The evidence required may therefore be materially different. An interlocutory motion may proceed on a motion record prepared on an urgent timetable, while permanent relief ordinarily depends on the evidentiary and factual findings made through final adjudication.

Can an interlocutory injunction later become permanent?

The same dispute may involve both forms of relief, but an interlocutory injunction does not automatically become permanent simply because it was granted earlier.

A party seeking permanent injunctive relief must establish entitlement to that final remedy on the record and legal findings available at the final stage.

For an overview of the different forms of injunctive relief, see What types of injunctions are available in Ontario?.

How does ME Law assess interlocutory and permanent injunctions?

ME Law distinguishes between the immediate question of whether interim court intervention is required and the separate question of what final equitable relief should follow once the parties’ substantive rights have been determined.

That distinction affects litigation strategy, evidence, the scope of the proposed order, and the legal authorities that should be placed before the Superior Court of Justice.

For ME Law’s approach to final equitable relief, see Permanent Injunctions and Final Equitable Relief.

Contact ME Law if you are seeking or responding to interlocutory or permanent injunctive relief in Ontario.

Yes. An Ontario court may grant a permanent injunction after trial or another final adjudication of the parties’ rights. Unlike an interlocutory injunction, permanent relief is not based on a preliminary assessment of an unresolved dispute. The claimant must establish the underlying legal right and persuade the court that a permanent injunction is an appropriate equitable remedy.

When can a court grant a permanent injunction?

The Ontario Court of Appeal addressed the distinction in 1711811 Ontario Ltd. (AdLine) v. Buckley Insurance Brokers Ltd., 2014 ONCA 125.

The Court confirmed that permanent injunctive relief can be granted only after a final adjudication in which the parties’ legal rights have been fully evaluated. The court must then determine whether an injunction is an appropriate remedy in the circumstances.

This means a permanent injunction may follow a trial, but a conventional trial is not necessarily the only procedural route. The critical point is that the underlying rights have been finally determined.

For the distinction between interim and final relief, see What is the difference between an interlocutory injunction and a permanent injunction in Ontario?

Is a permanent injunction automatic if the claimant wins?

No.

Establishing the underlying claim does not automatically entitle the successful party to a permanent injunction. An injunction is an equitable and discretionary remedy, so the court must also decide whether injunctive relief is appropriate.

Relevant considerations can include whether damages would provide an adequate remedy, whether the wrongful conduct is continuing or sufficiently likely to recur, the practical effect of the proposed order, and whether any equitable consideration weighs against granting the relief. Ontario’s statutory framework also expressly allows a court with jurisdiction to grant an injunction to award damages in addition to, or instead of, an injunction.

Does the RJR—MacDonald test apply to a permanent injunction?

No. The familiar interlocutory test involving a serious issue to be tried, irreparable harm, and balance of convenience is designed for circumstances where the court has not yet finally determined the parties’ rights.

In AdLine, the Ontario Court of Appeal confirmed that a different analysis applies once permanent relief is sought following final adjudication. At that stage, the claimant must establish its legal rights and the court determines whether a permanent injunction is an appropriate remedy.

See What do you have to prove to get an interlocutory injunction in Ontario? for the pre-trial test.

What can a permanent injunction require?

A permanent injunction may restrain specified conduct on a continuing basis. In an appropriate case, final injunctive relief can also be mandatory and require positive action.

“Permanent” describes the final nature of the relief; “mandatory” describes what the order requires a party to do. They are not interchangeable concepts.

See What is a mandatory injunction in Ontario?

How does ME Law assess permanent injunctive relief?

ME Law considers whether the underlying legal rights can be established, whether damages or other remedies adequately address the dispute, whether future protection is required, and how precisely the proposed final order should be framed.

The analysis also considers the court’s equitable discretion and the practical consequences of imposing continuing obligations or restrictions after the merits have been determined. For ME Law’s approach to final equitable relief, see Permanent Injunctions and Final Equitable Relief.

Contact ME Law if your Ontario litigation may require permanent injunctive relief.

Depending on the problem, Ontario litigation may involve specialized remedies such as a Mareva injunction to preserve assets, an Anton Piller order to preserve evidence, a Norwich order to obtain targeted information from a third party, or a Certificate of Pending Litigation (CPL) where an interest in land is in issue. These remedies serve different purposes and involve different legal tests; a CPL, in particular, is a distinct statutory remedy rather than an injunction.

What is a Mareva injunction?

A Mareva injunction, sometimes described as a freezing order, is an exceptional form of interlocutory relief intended to prevent assets from being removed, dissipated, or dealt with in a way that could frustrate enforcement of a future judgment.

Ontario’s Commercial List publishes a Mareva model order, reflecting the specialized nature of this remedy. The Ontario jurisprudence requires a demanding evidentiary foundation, including a strong prima facie case and evidence supporting a real risk that assets may be dealt with so that a future judgment cannot effectively be satisfied.

For the broader range of interim remedies, see What types of injunctions are available in Ontario?.

What is an Anton Piller order?

An Anton Piller order is an exceptional civil order designed to preserve evidence where there is a real risk that relevant material may otherwise be destroyed or made unavailable.

The Supreme Court of Canada in Celanese Canada Inc. v. Murray Demolition Corp., 2006 SCC 36 emphasized the extraordinary and intrusive nature of the remedy. Among other requirements, the applicant must demonstrate a strong prima facie case, very serious potential or actual harm, convincing evidence that the responding party possesses relevant material, and a real possibility that the material may be destroyed before ordinary discovery can operate.

An Anton Piller order is not a criminal search warrant and does not authorize forcible entry. Its purpose is preservation of evidence under tightly controlled court supervision. The Ontario Commercial List also maintains a model Anton Piller Order.

Because these applications are evidence-intensive, see What evidence matters most on an injunction motion in Ontario?.

What is a Norwich order?

A Norwich order is an equitable disclosure remedy directed at a third party who has become involved, often innocently, in circumstances connected to alleged wrongdoing and possesses information necessary to identify wrongdoers, trace transactions, or advance a potential claim.

The Ontario Superior Court’s Commercial List Authorities Book identifies both Norwich Pharmacal Co. v. Customs and Excise Commissioners and the Ontario Court of Appeal’s GEA Group AG v. Flex-N-Gate Corporation, 2009 ONCA 619 as key Norwich authorities.

A Norwich order is therefore principally about obtaining targeted information; it is not simply another form of injunction.

What is a Certificate of Pending Litigation?

A Certificate of Pending Litigation is different again.

Under section 103 of the Courts of Justice Act, a CPL may be issued in a proceeding in which an interest in land is in question and, once registered, gives notice of the proceeding in relation to that land. Rule 42 of the Rules of Civil Procedure governs the procedure, including the requirement for a court order before the certificate can be issued.

A CPL can have significant practical consequences for dealings with real property. Section 103 also creates potential liability where a party registers a CPL without a reasonable claim to an interest in the land.

ME Law handles disputes involving property and title through its Real Estate Litigation practice.

How does ME Law determine which remedy is appropriate?

The starting point is the risk that needs to be addressed.

If assets may disappear, a Mareva injunction may be relevant. If evidence is at risk, an Anton Piller order may need to be considered. If critical information is held by a third party, Norwich relief may be appropriate. If the dispute concerns an interest in land, a CPL may provide a different form of protection.

ME Law assesses the underlying cause of action, urgency, available evidence, proportionality, procedural requirements, and the consequences of the proposed order before determining which form of relief should be pursued.

Contact ME Law if your Ontario dispute may require urgent asset, evidence, information, or property-preservation relief.

A Certificate of Pending Litigation (CPL) is a court-authorized notice registered against land when a legal proceeding puts an interest in that land in question. Under section 103 of Ontario’s Courts of Justice Act, commencing the lawsuit alone does not give notice of the proceeding to non-parties. The CPL must first be issued by the court and then registered in the proper land registry office.

When can a CPL be sought?

A CPL is relevant where the claimant asserts an actual interest in specific real property rather than merely seeking payment of money.

Depending on the underlying claim, this can arise in disputes concerning ownership, agreements of purchase and sale, beneficial interests, trusts, fraud, or other litigation in which rights to the land itself are genuinely at issue.

Under Rule 42.01 of the Rules of Civil Procedure, a party seeking a CPL must claim that relief in the originating process or pleading commencing the proceeding and provide a description of the land sufficient for registration. A CPL may be issued by the registrar only under a court order.

For disputes involving title and property rights, see ME Law’s Real Estate Litigation practice.

Can a CPL be obtained without notice?

Yes. Rule 42.01(3) permits the initial motion for a CPL order to be brought without notice.

However, if the court grants the order, Rule 42.01 requires the party obtaining it to serve the order, together with the notice of motion and the affidavits and other materials used at the hearing, forthwith on the parties against whom an interest in land is claimed.

A CPL is therefore procedurally distinct from a without-notice injunction even though both remedies may sometimes be sought urgently.

See What other injunction-related remedies are available in Ontario? for the distinction between CPLs, Mareva injunctions, Anton Piller orders, and Norwich orders.

What effect does registering a CPL have?

Once issued and properly registered, the CPL gives notice of the pending litigation in relation to the land.

That can have significant practical consequences for a proposed sale, refinancing, or other transaction involving the property. But a CPL does not itself decide who owns the land or finally determine the underlying claim. The parties’ substantive rights remain to be resolved in the litigation.

Can a CPL be discharged?

Yes. Section 103 of the Courts of Justice Act gives the court authority to discharge a CPL in specified circumstances, including where the party who obtained it does not have a reasonable claim to the interest in land asserted.

This is one reason a CPL should not be used simply as leverage in a monetary dispute where no genuine interest in the property is claimed.

Can someone be liable for registering an improper CPL?

Yes.

Under section 103(4), a party that registers a CPL without a reasonable claim to an interest in the land is liable for damages sustained by any person as a result of the registration. Those damages may be determined in the underlying proceeding or in a separate proceeding.

How does ME Law assess whether a CPL is appropriate?

ME Law considers the precise interest claimed in the property, the underlying cause of action, the available evidence, the urgency of preserving the land-related claim, and the potential consequences of registration.

The analysis also considers whether another remedy is more appropriate and the exposure that may arise if a CPL is sought without a reasonable basis.

For ME Law’s approach to this remedy, see Certificate of Pending Litigation.

Contact ME Law if an Ontario real estate dispute may require a Certificate of Pending Litigation or other urgent protective relief.

Yes. Injunctions connected with a labour dispute are governed by a specialized statutory regime under section 102 of Ontario’s Courts of Justice Act. Although they remain injunctions, the ordinary procedural rules do not apply in exactly the same way. Section 102 imposes specific requirements concerning notice, evidence, timing, police assistance, without-notice relief, and appeals.

Rule 40.02(4) of the Rules of Civil Procedure expressly provides that the ordinary 10-day without-notice regime in Rule 40.02(1) to (3) does not apply to an injunction in a labour dispute under section 102.

What counts as a labour dispute under section 102?

Section 102 defines a labour dispute broadly.

It includes disputes concerning the terms, tenure, or conditions of employment, as well as disputes concerning the association or representation of persons involved in negotiating, fixing, maintaining, changing, or seeking to arrange employment terms or conditions.

The statutory definition can apply even where the disputants do not stand in a direct employer-employee relationship.

Is notice normally required for a labour injunction?

Yes.

Subject to the special exception in s. 102(8), an injunction restraining conduct connected with a labour dispute cannot be granted without notice.

For an interim injunction, s. 102(6) generally requires at least two days’ notice to the responding party and to other affected persons who are not named in the notice of motion.

An interim labour injunction may be granted for no longer than four days.

This is materially different from the ordinary civil procedure discussed in Can you get an injunction without notice to the other side in Ontario?.

Are there additional requirements before the court grants relief?

Yes.

Under s. 102(3), the court must be satisfied that reasonable efforts to obtain appropriate police assistance, protection, or action have been unsuccessful where the alleged problem involves matters such as danger of property damage, injury to persons, interference with lawful entry or exit, or a breach of the peace.

Section 102 also imposes a specialized evidentiary rule. Subject to the without-notice exception, affidavit evidence supporting the injunction must be confined to facts within the personal knowledge of the deponent. A party may also require the deponent to attend for cross-examination at the hearing.

Can a labour injunction ever be obtained without notice?

Yes, but s. 102(8) establishes its own statutory test.

Among other requirements, the court must be satisfied that the matter is otherwise a proper case for an interim injunction and that the delay required to give ordinary notice would result in irreparable damage or injury, a breach of the peace, or interruption of an essential public service.

Reasonable notification must also have been given to the persons affected, or the court must be satisfied that such notification could not have been given. The material facts supporting these requirements must be established through oral evidence.

The statute therefore creates a specific route for urgent labour injunctions rather than simply importing the ordinary Rule 40.02 procedure.

Why is disclosure especially important on a labour injunction?

Section 102(9) is unusually explicit.

A misrepresentation of a fact, or the withholding of qualifying relevant information, directly or indirectly in a proceeding under s. 102, constitutes contempt of court.

That statutory provision reinforces the importance of a complete and accurate evidentiary presentation where urgent labour-related relief is sought.

Are appeals from labour injunctions different?

Yes.

Under s. 102(10), an appeal from an order made under section 102 lies directly to the Ontario Court of Appeal without leave. That differs from the ordinary appeal route that may apply to an interlocutory injunction made in other civil proceedings.

See Can injunction orders be appealed in Ontario? for the distinction between ordinary injunction appeals and this statutory labour-dispute exception.

How does ME Law assess a labour injunction matter?

ME Law first determines whether the dispute falls within the statutory definition of a labour dispute and whether section 102 therefore governs the requested relief.

The analysis then addresses the applicable notice requirements, efforts to obtain police assistance where required, evidentiary restrictions, urgency, the proposed duration and scope of the order, and any special procedural or appellate consequences.

Because the statutory regime differs materially from an ordinary civil injunction, these issues should be identified before the motion record and proposed order are finalized.

For ME Law’s broader injunction practice, see Injunctions.

Contact ME Law if you are seeking or responding to injunctive relief arising from a labour dispute in Ontario.

An injunction is usually not the right remedy where damages can adequately address the alleged harm, the threatened harm is speculative or insufficiently supported by evidence, the proposed order is too vague or broad to operate fairly, or the moving party cannot satisfy the applicable legal test.

Urgency alone does not establish entitlement to an injunction. The court must still be satisfied that equitable intervention is justified on the evidence and that the proposed order is an appropriate response to the dispute.

When are damages an adequate alternative to an injunction?

For a conventional interlocutory injunction, irreparable harm is a central consideration. The Supreme Court of Canada explained in RJR—MacDonald Inc. v. Canada (Attorney General) that “irreparable” concerns the nature of the harm rather than simply its financial magnitude. Harm that can be quantified and adequately compensated through damages will ordinarily be more difficult to characterize as irreparable.

This does not mean that every financial dispute is unsuitable for injunctive relief. The question is whether a later damages award can realistically repair the consequences of allowing the challenged conduct to occur while the litigation continues.

For more on this part of the test, see What is irreparable harm in an Ontario injunction motion?.

Ontario law also expressly recognizes damages as an alternative final remedy. Section 99 of the Courts of Justice Act provides that a court with jurisdiction to grant an injunction or specific performance may award damages in addition to, or in substitution for, that relief.

What if the threatened harm is only speculative?

An applicant should be able to connect the requested injunction to a credible evidentiary record showing what is likely to occur if relief is refused.

General concern that something harmful might happen is not the same as demonstrating harm that justifies court intervention before the underlying rights have been finally determined.

The evidence may need to address the expected conduct, its timing, its likely consequences, and why those consequences could not adequately be repaired later.

The complete interlocutory framework is explained in What do you have to prove to get an interlocutory injunction in Ontario?.

Can an injunction be refused because the requested order is too broad or unclear?

The scope and wording of the proposed order matter.

An injunction should identify with sufficient precision what conduct is restrained or what positive action is required. A request that goes materially beyond what is necessary to protect the asserted right may raise proportionality, fairness, and enforcement concerns.

Clarity is particularly important because breach of an injunction may ultimately be enforced through civil contempt proceedings. In Carey v. Laiken, 2015 SCC 17, the Supreme Court of Canada confirmed that contempt requires, among other things, a clear and unequivocal order.

A court may therefore scrutinize not only whether some form of relief is justified, but whether the particular order requested is sufficiently precise and appropriately tailored.

See What happens if someone breaches an injunction in Ontario? for the enforcement consequences of a court order.

Does urgency make an injunction appropriate?

Not by itself.

A dispute can be extremely urgent and still fail to justify an injunction. Speed addresses when the court is being asked to intervene; it does not establish why the legal requirements for intervention have been met.

The moving party still needs a proper legal foundation, evidence supporting the threatened harm, and an order that responds proportionately to the problem.

Conversely, a strong underlying claim does not automatically justify interim relief if damages or another remedy can adequately protect the claimant’s interests.

What other remedies may be more appropriate?

Depending on the dispute, the appropriate response may instead involve damages, declaratory relief, specific performance, preservation measures, or another procedural or final remedy.

The choice should be driven by the legal right being asserted and the practical result the client actually needs, rather than by treating an injunction as the default response to every urgent dispute.

How does ME Law assess whether an injunction is the right remedy?

ME Law assesses the underlying legal right, the available evidence, the immediacy and nature of the threatened harm, whether damages could provide an adequate remedy, and whether the proposed order is precise and proportionate to the problem.

That analysis also considers the practical consequences of granting and refusing relief and whether another remedy could protect the client’s position more effectively or with less procedural risk.

For ME Law’s broader approach to urgent and equitable relief, see Injunctions.

Contact ME Law if you are assessing whether to seek an injunction or need to respond to a request for injunctive relief in Ontario.

The biggest mistake is treating urgency as a substitute for proof. Ontario’s procedural rules allow genuinely urgent injunction motions to move quickly, but urgency does not reduce the need for a sound legal basis, a credible evidentiary record, proper disclosure, and a carefully drafted order.

A matter can be extremely time-sensitive and still fail if the evidence does not establish the legal requirements for the relief requested.

Why is urgency alone not enough to obtain an injunction?

Urgency explains why the court is being asked to act quickly. It does not establish why the court should grant the injunction.

For a conventional interlocutory injunction that restrains conduct, the moving party ordinarily still needs to address the RJR—MacDonald framework: a serious question to be tried, irreparable harm, and the balance of convenience.

Where the requested order is mandatory in substance, the first-stage merits threshold may be more demanding.

The complete framework is explained in What do you have to prove to get an interlocutory injunction in Ontario?.

The practical point is simple: a compressed timetable changes the speed of preparation, not the substance that must ultimately be proved.

Why does the evidentiary record matter so much?

Injunction motions are highly dependent on the motion record.

The Superior Court of Justice may have to make an important interim decision before the parties have completed discoveries or reached trial. The moving party therefore needs affidavit evidence and supporting documents capable of establishing the relevant legal right, the threatened harm, the urgency, and the practical consequences of granting or refusing relief.

A weak factual record cannot ordinarily be repaired by repeatedly emphasizing that the matter is urgent.

Chronology is particularly important. The evidence should make clear what occurred, what is expected to happen next, when it may happen, and why court intervention is required before the ordinary litigation process can address the dispute.

See What evidence matters most on an injunction motion in Ontario? for the evidentiary considerations in more detail.

Why are without-notice motions especially demanding?

Where relief is sought without notice, urgency creates additional responsibilities rather than eliminating them.

Under Rule 39.01(6) of the Rules of Civil Procedure, the moving party must make full and fair disclosure of all material facts. That includes facts that may assist the responding party’s position, not only facts supporting the requested relief.

Failure to make the required disclosure may itself provide a basis for setting aside the order.

For the separate procedural requirements, see Can you get an injunction without notice to the other side in Ontario?.

Why does the wording of the proposed order matter?

An injunction should be drafted with enough precision that the affected party can understand what conduct is restrained or what action is required and the court can meaningfully supervise compliance.

An order that is unnecessarily broad, ambiguous, or disconnected from the evidence may create problems both at the injunction hearing and later if enforcement becomes necessary.

The objective is therefore not to request the broadest order imaginable. It is to identify the relief actually necessary to address the demonstrated risk.

What should be assessed before an urgent injunction motion is brought?

Preparation should address more than urgency.

Counsel should consider the applicable injunction test, the strength of the underlying legal claim, the affidavit and documentary record, the adequacy of damages, the proposed scope of relief, and the practical effect of the order on both sides.

The moving party should also consider the undertaking as to damages required by Rule 40.03, unless the court orders otherwise. Interim relief can create loss for the responding party, and that potential exposure is part of the strategic assessment before an injunction is sought.

How does ME Law approach an urgent injunction motion?

ME Law approaches urgency as a case-management constraint, not a substitute for legal preparation.

The objective is to identify the precise relief required, build the evidentiary record around the applicable test, address procedural obligations early, and draft an order that is sufficiently narrow and precise for the court to grant and supervise.

That includes assessing not only whether an injunction can be sought quickly, but whether the available evidence and legal theory justify asking the court to intervene before the underlying dispute has been finally determined.

For ME Law’s approach to urgent interim relief, see Urgent Interlocutory and Interim Injunctions.

Contact ME Law if you are considering an urgent injunction motion or need to respond to a request for immediate injunctive relief in Ontario.