Summary Judgment in Ontario: When You Can Win — or Lose — Without a Trial
Governed by Rule 20 of the Rules of Civil Procedure (Ontario) | Updated for 2025
Executive Overview
Summary judgment is one of the most powerful — and most misused — procedural tools in Ontario civil litigation. Used correctly, it resolves a dispute in months rather than years, at a fraction of trial cost, without the uncertainty of a judge or jury hearing evidence live. Used incorrectly, it produces an adverse result that is difficult to appeal, damages the evidentiary record for the proceedings that follow, and signals to the opposing party exactly where your weaknesses are.
The motion is deceptively simple in concept: a party brings a motion before a judge and argues that there is no genuine issue requiring a trial. If the judge agrees, the case ends. No witnesses. No cross-examination of lay evidence over days. No trial logistics. A final order, enforceable immediately.
What makes summary judgment dangerous is the same thing that makes it attractive — finality. A well-prepared motion brought at the right moment on the right issues can end a dispute on your terms before the other side has had the opportunity to build momentum, exhaust your litigation budget, or introduce the procedural complexity that benefits a well-resourced opponent who is playing for time. A poorly prepared motion, or one brought on the wrong issues or at the wrong stage, produces a result that cannot be easily corrected and a record that will be used against you through every subsequent stage of the litigation.
The decision to bring a summary judgment motion — or to oppose one — is among the most consequential strategic choices in civil litigation. It is not a default step. It is not a tactical gesture. It is a litigation-defining commitment that requires the judgment of counsel who have appeared on these motions and understand, from experience, where they succeed and where they fail.
If you are facing a summary judgment motion, or considering bringing one, the time to engage experienced counsel is before the motion record is assembled — not after.
What Summary Judgment Is — and What It Commits You To
A summary judgment motion under Rule 20 of the Rules of Civil Procedure is a motion brought before a judge of the Ontario Superior Court of Justice for an order granting judgment without a trial. It may be brought by a plaintiff, a defendant, or both simultaneously on different issues.
The legal standard, as reformulated by the Supreme Court of Canada in Hryniak v. Mauldin, [2014] 1 SCR 87, asks whether the motion judge can make the necessary findings of fact, apply the law to those facts, and produce a just and proportionate result — without a trial. The court’s powers on a summary judgment motion are expansive. The judge may weigh evidence, assess credibility, and draw reasonable inferences. The motion is not limited to cases where the facts are undisputed. It is available where, on the record before the court, the just result can be determined without the full evidentiary process of trial.
This is the post-Hryniak landscape. It expanded the availability of summary judgment substantially from what came before, and it changed the strategic calculus for every civil litigator in Ontario. Cases that would previously have been regarded as trial-bound are now routinely resolved on motion. That expansion is an opportunity — but only for parties and counsel who know how to build a motion record that gives a judge the confidence to decide.
What Hryniak did not change is this: the motion is a final proceeding. The order made is subject to appeal, but appeals from summary judgment decisions are expensive, time-consuming, and succeed on narrow grounds. The motion record you build, the evidence you adduce, and the issues you choose to contest or concede are permanent features of the litigation record from the moment the motion is argued.
Where Summary Judgment Motions Go Wrong
The strategic failures on summary judgment are predictable. They appear consistently across counsel and across case types. Understanding them is the prerequisite to avoiding them.
Bringing the motion on the wrong issues. Summary judgment is most effective when it targets a discrete, legally determinative issue — one that, if resolved in your favour, ends the case or removes a substantial claim. It is least effective when it is brought as a global assault on a complex factual dispute in which credibility is genuinely central and the evidence is contested at every level. Counsel who bring summary judgment motions on issues that require the judge to resolve a genuine factual controversy — not a legal question, not an issue of documentary evidence, but a real credibility contest between competing witnesses — are inviting the court to find a genuine issue requiring trial. When that finding comes, it comes with a costs order, an assessed record, and a clear signal to the other side about which facts you are not confident defending at trial.
Bringing the motion too early — or too late. Timing is outcome-determinative on summary judgment. A motion brought before examination for discovery has been completed may deprive the moving party of evidence necessary to support the motion — and may give the responding party a basis to resist on the ground that they have not had the opportunity to obtain evidence essential to their opposition under Rule 20.06. A motion brought after the issues have been fully developed and the parties have exchanged their complete evidentiary position may be resolved, but the cost advantage — one of the primary reasons to bring the motion — has been substantially eroded. The right moment for summary judgment is when the legally determinative issue can be isolated on a focused record that gives the judge what is needed to decide without sacrificing the cost and speed advantages that are the motion’s primary value.
Assembling a motion record that proves too much or too little. The motion record on a summary judgment motion is everything. Unlike trial, there are no witnesses who can be called on short notice to fill gaps. There is no redirect examination to rehabilitate a deponent whose cross-examination went poorly. The affidavits, the cross-examination transcripts, the documentary exhibits, and the factum are the totality of what the judge has. A record that is over-inclusive — burying the legally determinative issue in a volume of marginally relevant material — invites the judge to find complexity where there may be none. A record that is under-inclusive — that fails to address the strongest arguments on the other side — produces a result where the responding party’s answer is more persuasive than the moving party anticipated.
Failing to anticipate and neutralize the responding party’s best argument. Summary judgment motions are decided on the record presented by both sides. A moving party that builds its case without considering the strongest version of the opposing argument is preparing for the motion it wants to face, not the motion it will face. Experienced counsel stress-test the motion record before it is filed — identifying the points on which the responding party will concentrate, the evidence that will be used to create the appearance of a genuine issue, and the legal arguments that will be raised to resist the motion. That stress-testing shapes the record before it is filed, not after.
Cross-examining ineffectively on the summary judgment motion. Cross-examination of affiants on a summary judgment motion is a specialized skill distinct from trial cross-examination. The objective is not to attack credibility in the way that is appropriate before a trier of fact who will assess demeanour — the motion judge is not conducting a credibility assessment of the same kind that occurs at trial. The objective is to obtain admissions that close the factual disputes the responding party is attempting to keep alive, to establish that the deponent lacks personal knowledge of the facts asserted, or to demonstrate that the evidence adduced does not support the legal propositions the responding party claims it does. Counsel who approach summary judgment cross-examinations as trial cross-examinations are missing the specific objective that makes the cross-examination useful in this context.
Treating the motion as a rehearsal for trial rather than a final proceeding. This is the most common strategic error among counsel who are unfamiliar with the post-Hryniak landscape. The summary judgment motion is not an opportunity to preview your trial theory and test the other side’s evidence. It is a final proceeding that requires the same commitment of evidentiary preparation and legal argument as trial — compressed into a motion record format. Counsel who approach it otherwise produce records that do not give the court sufficient confidence to decide — which means the court finds a genuine issue requiring trial, and the parties have spent significant resources achieving nothing except revealing their position.
The Legal Framework — What Rule 20 Actually Requires
Rule 20 of the Rules of Civil Procedure provides the procedural mechanism. Hryniak v. Mauldin provides the governing analytical framework. The combination of the two defines the terrain on which summary judgment motions are fought.
Rule 20.01 permits any party to move for summary judgment on all or part of the claim in the main action. The motion may be brought at any time after a defendant has delivered a defence. It does not require leave.
Rule 20.02 permits a responding party to rely on the pleadings alone if no affidavit or other evidence is available — but the risks of doing so without evidence are significant in the post-Hryniak landscape.
Rule 20.04(2) directs the court to grant summary judgment if it is satisfied that there is no genuine issue requiring a trial — with respect to a claim or defence. The court may grant partial summary judgment on discrete issues.
Rule 20.04(2.1) and (2.2) — the enhanced powers introduced after Hryniak — permit the motion judge to weigh evidence, evaluate credibility where credibility can be fairly assessed on the written record, and draw reasonable inferences. These powers fundamentally changed what is possible on a summary judgment motion and what is required to resist one. A responding party that was previously able to defeat a summary judgment motion simply by filing contradictory affidavit evidence is now required to demonstrate why the contradiction creates a genuine issue that requires live evidence at trial — not merely that a contradiction exists.
The Hryniak two-stage test requires the court to first ask whether summary judgment can be granted under the traditional standard — no genuine issue requiring trial. If that standard is not met, the court proceeds to ask whether the enhanced powers under Rules 20.04(2.1) and (2.2) should be exercised to resolve the dispute without trial. If those powers, exercised individually or in combination, give the court the ability to make the necessary findings and achieve a just result, summary judgment must be granted.
The Supreme Court of Canada was explicit: when summary judgment is available, it must be used. The culture of litigation that defaults to trial as the presumptive resolution mechanism is inconsistent with the proportionality principle that Hryniak mandates. This is not merely an aspirational statement — it has produced a body of appellate jurisprudence in Ontario in which courts of appeal have reversed motion judges who declined to grant summary judgment on grounds of insufficient complexity, and have upheld summary judgment decisions on records that prior to Hryniak would have been considered inadequate.
Mini-trials under Rule 20.05 provide an additional tool: where the court determines that some — but not all — issues can be resolved on the motion record, it may order a mini-trial on those discrete issues, potentially resolving the entire action without a full conventional trial. This procedural mechanism is underused and underappreciated. In the right case, it allows a party to achieve the finality of trial on a compressed and cost-effective timeline.
Partial Summary Judgment — Strategic Opportunity and Structural Risk
One of the most consequential developments in Ontario summary judgment practice since Hryniak is the increased availability and use of partial summary judgment — a motion that does not seek to end the case entirely but seeks to resolve discrete issues or claims that can be separated from the remainder of the action.
Partial summary judgment, used strategically, can remove a significant claim from the litigation — reducing the scope of what must be tried, eliminating a damages head that the other side is relying on as leverage, or establishing a legal principle that determines the framework for the remaining issues. In commercial disputes involving multiple independent claims arising from the same transaction or relationship, partial summary judgment can surgically remove the most vulnerable elements of the opposing party’s case.
The risk is fragmentation. The Ontario Court of Appeal has issued cautions about partial summary judgment motions that fragment what should be tried together — where the issues are so interrelated that resolving some without the others creates inconsistency risks or produces an incomplete record for the remaining trial. In Malik v. Attia, 2020 ONCA 787, the Court of Appeal reiterated that partial summary judgment should not be granted where it would be unjust to fragment the proceedings. The determination of whether fragmentation is harmful is itself a strategic judgment that requires experienced counsel — not a formula.
Opposing a Summary Judgment Motion — The Responding Party’s Strategy
A summary judgment motion does not only require strategic analysis from the moving party. For the responding party, the motion presents both a threat and an opportunity, and the response strategy must address both.
The threshold for resisting has changed. Post-Hryniak, a responding party cannot defeat a summary judgment motion simply by filing contradictory evidence and asserting that a genuine issue exists. The court can weigh that evidence and determine that the contradiction does not create a genuine issue requiring trial. The responding party must affirmatively demonstrate why the dispute requires live evidence — why credibility can only be assessed by a trier of fact who has observed the witness, why the inference-drawing necessary to resolve the issue requires a full evidentiary record, or why the legal questions at stake are of sufficient complexity to require full argument at trial.
The responding record must be as carefully constructed as the moving record. Counsel who treat the response to a summary judgment motion as a defensive exercise — filing an affidavit and a factum that challenges the moving party’s evidence without affirmatively building an alternative record — are underutilizing the opportunity the motion provides. A well-structured responding record does three things simultaneously: it establishes the genuine issues that require trial; it frames those issues in the way most favourable to the responding party; and it preserves the evidentiary record in a form that will be useful if the motion is denied and the case proceeds to trial.
Cross-examination of the moving party’s affiants is a critical strategic tool. A responding party that does not cross-examine the moving party’s affiants has left the most effective mechanism for creating genuine issues on the table. Effective cross-examination on a summary judgment motion extracts admissions, creates record inconsistencies, establishes that the deponent lacks personal knowledge, and demonstrates that the moving party’s evidence does not meet the threshold they are asserting. This requires specific preparation — not a generic cross-examination strategy adapted from trial practice.
When Summary Judgment Is Not Appropriate
The expanded availability of summary judgment under Hryniak does not mean it is appropriate in every case. Experienced counsel will advise against bringing a summary judgment motion where:
The core dispute is genuinely credibility-dependent and the contradictions in the evidence cannot be resolved on a written record. Where the outcome turns entirely on which of two witnesses a judge believes after observing them testify, summary judgment produces either a wrong result or a finding of genuine issue requiring trial — neither of which serves the moving party.
The legal questions are genuinely unsettled and require full argument to develop. Where the legal issue at the heart of the dispute is novel or contested at the appellate level, a summary judgment motion may produce a first-instance decision on an inadequate record that is unhelpful to the development of the law and creates unfavourable precedent.
The factual record has not been sufficiently developed to support the motion. A motion brought before examinations for discovery are complete may leave evidentiary gaps that the responding party exploits to resist the motion and obtain a costs order.
The relationship between issues means that partial resolution would be inefficient or unjust. Where the claims are so interrelated that resolving some without the others creates fragmentation risks, the motion should be deferred until the case is positioned for a more comprehensive resolution.
Early Decisions That Determine Outcome
Summary judgment motions are decided on records built weeks or months before the hearing. The decisions that determine outcome — which issues to target, what evidence to adduce, when to move, how to cross-examine — are made in the preparation phase. By the time the motion is argued, the record is closed. There is no supplementing an affidavit that does not address the responding party’s best argument. There is no correcting a cross-examination that gave admissions to the other side. There is no withdrawing a motion that has revealed the weaknesses in your case.
The appropriate time to engage experienced civil litigation counsel on a summary judgment motion is at the moment the issue is first identified as a potential motion issue — not when the timetable has been set and the record is being assembled. Counsel who are brought in at the assembly stage are managing constraints created by decisions they did not make. Counsel who are engaged at the strategic level shape those decisions from the outset.
Why Counsel Selection Is Outcome-Determinative
Summary judgment practice in Ontario is a specialized discipline. It requires familiarity with the post-Hryniak jurisprudence, experience in building and challenging motion records, proficiency in the specific cross-examination techniques that are effective in this context, and the judgment to assess — before the motion is filed — whether the case is genuinely appropriate for summary disposition or whether proceeding to trial is the more reliable path to the outcome the client needs.
Counsel who have not appeared regularly on summary judgment motions in the post-Hryniak landscape are not equipped to make these judgments. The motion is not a simplified version of trial. It is a different proceeding with its own evidentiary dynamics, its own standards, and its own failure modes. The consequences of strategic error — a denied motion that reveals your case, an adverse finding on a key issue, a costs order that funds the other side’s next step — are not recoverable through subsequent proceedings in the way that trial errors sometimes are.
ME Law Professional Corporation acts as commercial litigation counsel and civil litigation counsel in Ontario for parties on both sides of summary judgment motions in significant commercial disputes. We are engaged at the strategic stage — when the decision to bring or oppose a motion is being made — and we build and execute motion records at the level these proceedings require. We are also retained to take over summary judgment proceedings that have not been managed strategically, where the record needs to be rebuilt or supplemented before the motion is argued.
Strategic Advisory — Retain a Summary Judgment Lawyer in Toronto
Summary judgment motions — in commercial litigation, shareholder disputes, real estate litigation, breach of contract claims, and complex civil proceedings before the Ontario Superior Court of Justice — require experienced civil litigation counsel in Ontario from the moment the motion is first identified as a strategic option.
If you require advice from a commercial litigation lawyer in Toronto or a civil litigation lawyer in Ontario regarding:
- whether a summary judgment motion is strategically appropriate on your facts;
- building a motion record that gives a judge the confidence to decide without trial;
- opposing a summary judgment motion and constructing a responding record that preserves the genuine issues requiring trial;
- cross-examination strategy on summary judgment motions;
- partial summary judgment as a tool to remove discrete claims or damages heads;
- mini-trial applications under Rule 20.05;
- appeals from summary judgment decisions at the Ontario Court of Appeal; or
- taking over a summary judgment motion that has not been managed at the level the proceeding requires,
the appropriate time to engage is before the record is assembled. Once the motion is filed, the strategic decisions that determine outcome have largely been made.
Retain a Civil Litigation Lawyer at ME Law
ME Law Professional Corporation
📍180 Bloor Street West, Suite 1000, Toronto, Ontario, M5S 2V6
🌐 Website: https://melaw.ca/contact
📞 Telephone: (416) 923-0003
✉️ Email: intake@melaw.ca
All inquiries are handled with strict discretion. Initial consultations focus on the specific claims and defences at issue, the state of the evidentiary record, the procedural posture of the litigation, whether the issues are appropriate for summary disposition, and the tactical implications of the motion for the proceedings that follow. We represent moving parties and responding parties and advise on the full motion lifecycle — from strategic assessment through record assembly, cross-examination, argument, and appeal.
Disclaimer
This article is provided for general informational purposes only and does not constitute legal advice. Summary judgment proceedings under Rule 20 of the Rules of Civil Procedure are highly fact-specific and procedurally complex. The strategic appropriateness of a summary judgment motion, and the manner in which it should be prepared and argued, depends on the specific claims and defences at issue, the state of the evidentiary record, the applicable law, and the procedural history of the proceeding.
Reading this article does not create a solicitor-client relationship between the reader and ME Law Professional Corporation or any of its lawyers. Legal strategy should not be determined without a full review of the relevant facts, documents, and procedural record with qualified civil litigation counsel or commercial litigation counsel in Ontario.
ME Law Professional Corporation does not guarantee outcomes. Every summary judgment motion is determined by the specific motion record presented, the applicable legal standard, the exercise of judicial discretion, and the quality of the legal argument advanced. Strategic decisions regarding summary judgment should be made only after receiving tailored legal advice from counsel with direct experience in Ontario civil litigation practice.
The information in this article reflects Ontario civil procedure as of 2025 and may be affected by subsequent rule amendments or appellate decisions. If you are facing a summary judgment motion, or considering bringing one, contact a qualified civil litigation lawyer or commercial litigation lawyer in Toronto before the procedural timetable is set.