Canada: Class Actions

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Litigation law, mediation law, and arbitrage law thought leadership, articles, podcasts, videos and webinars from expert sources across the legal world. Explore insights covering civil law, class actions, dispute resolution, libel and defamation and more in relation to litigation, mediation and arbitration.

Can One Class Fit All? Alberta Court Addresses Class Conflicts In Corporate COVID‑19 Claims

Class actions promote litigation efficiency and access to justice, but they can also create built‑in tension between different groups of plaintiffs.

Canada Litigation

MT

Miller Thomson LLP

Appealing Briefs – Épisode 26 : Lundin Mining : Qu’est-ce Qui Constitue Un « Changement Important »? (Podcast)

Quand une société ouverte doit-elle divulguer immédiatement les développements survenus dans ses activités commerciales, son exploitation...

Canada Litigation

MT

McCarthy Tétrault LLP

Court Of Appeal Summaries (March 2 – 6, 2026)

Following are our summaries of the civil decisions of the Court of Appeal for Ontario from March 2, 2026 to March 6, 2026.

Canada Litigation

BM

Blaney McMurtry LLP

How Recent Court Rulings Shape Class Action Certification In British Columbia

If you are included in a class action that has been started in British Columbia, one of the first questions you likely have is whether the lawsuit will proceed.

Canada Litigation

SL

Siskinds LLP

An Error In Clinical Judgment Requires Actually Exercising Clinical Judgment

Canada Litigation

SL

Siskinds LLP

Inferring Materiality From Share Price Movement: Dziedziejko V Canopy Growth

Canada Litigation

BJ

Bennett Jones LLP

La Cour d'appel redéfinit la méthodologie applicable aux autorisations d'actions collectives

Canada Litigation

MT

McCarthy Tétrault LLP

The Court Of Appeal Of Quebec Clarifies The Test Applicable To The Authorization Of Class Actions

Canada Litigation

MT

McCarthy Tétrault LLP

Covid's Impact On Long-Term Care Homes Should Not Be Forgotten

Canada Litigation

GP

Gluckstein Lawyers

BWA: North v. Bayerische Motoren Werke AG (Podcast)

Canada Litigation

TL

Torys LLP

Martin v. Alphabet: Tribunal Sets The Public Interest Leave Framework—Evidence And Capacity Now The Gatekeepers

Canada Anti-trust

BJ

Bennett Jones LLP

Class Action Certification In British Columbia

Canada Litigation

SL

Siskinds LLP

Limitation Defences At Certification: Reichert V. Canada (AG), 2026 BCCA 9

Canada Litigation

MT

McCarthy Tétrault LLP

Year-in-review: Privacy Litigation Highlights

OH

Osler, Hoskin & Harcourt LLP

2026 Canadian In-House Counsel Report: Unparalleled Insights Into Canada's In-House Profession From CBA In-House Lawyers & Mondaq

Canada Law Practice

TC

CBA In-House Lawyers

Tax Alert: Changes To Canada's Transfer Pricing

SL

Segal GCSE LLP

Tariff Risk And Cross-Border M&A: What Canadian Companies Need To Know Before 2026 CUSMA Review

Canada Commercial

OL

Origin Law

The Court Says Fairness Comes First In CRA Decisions, Godin v. Canada (Attorney General), 2024 FC 1386

RS

Rotfleisch & Samulovitch P.C.

Why Organizations Initiate Workplace Culture Assessments: Reactive Triggers And Proactive Opportunities

Canada Employment

B

Bernardi

Developments In Class Action Law: Highlights From Q4 2025

The final quarter of 2025 marked significant developments in Canadian class action law, with courts refining the boundaries of certification and leave across securities, consumer protection and privacy class actions.

Canada Litigation

AB

Aird & Berlis LLP

Go West, Young Lawyer: British Columbia Is Canada's Class Action Capital

This article's title is adapted from a phrase ("Go West, Young Man") coined by news publishers in the 1850s. It captured the imaginations of clerks, mechanics, and soldiers returning...

Canada Litigation

Farris LLP

KB v Guhle, 2025 ABKB 472: Delayed Diagnosis Results In Infant's Quadruple Amputation In One Of Canada's Largest Medical Malpractice Awards

It is well established in Canadian law that medical professionals owe various duties to their patients. Some key components of a doctor's duty of care to a patient include the duty to diagnose, the duty to treat and the duty to consult and/or refer.

Canada Litigation

RH

Rice Harbut Elliott

B.C. Cracks Down On Class Action Waivers And Other Predatory Sales Practices

Behind every login screen is a rarely scrutinized but deeply consequential legal interaction: the clickwrap agreement. A clickwrap agreement is a digital contract where users signify their consent to terms and conditions by clicking a button or checking a box stating, "I agree".

Canada Litigation

RH

Rice Harbut Elliott

Ontario Court Grants Anti-suit Injunction To Enjoin Foreign Arbitration In Ongoing Crypto Litigation

Canada Litigation

OH

Osler, Hoskin & Harcourt LLP

An Exception To The Exceptional? D&O Releases In CCAA Proceedings

Canada Insolvency

ML

McMillan LLP

Setting The Precedent: 2025's Legal Landmarks And The Path Ahead

Canada Litigation

DW

Davies Ward Phillips & Vineberg

Competition Tribunal Shuts Door On First Public Interest Leave Bid Against Google & Apple

Canada Anti-trust

AG

Affleck Greene McMurtry LLP

The Canadian Class Actions Handbook

Canada Litigation

BJ

Bennett Jones LLP

What British Columbia Residents Need To Know About Participating In Class Actions

Canada Litigation

SL

Siskinds LLP

When Price Drops Prove Too Much: Rethinking Materiality In Secondary Market Misrepresentation Class Actions

Canada Litigation

LS

Lenczner Slaght LLP

Class Action Pursued Concerning Safety Defects With GLP-1 Drugs Mounjaro, Trulicity, & Zepbound

Canada Litigation

SL

Siskinds LLP

Come Fly With Me: Non-Resident Class Plaintiff Picks Litigation Travel Companion For BC Class Proceedings

Canada Litigation

ML

McMillan LLP

BC Court Of Appeal Dismisses Proposed Privacy Class Action; Finds Use Of Professionals' Names Was Not Commercial Exploitation

Canada Litigation

BJ

Bennett Jones LLP

When Price Drops Prove Too Much: Rethinking Materiality In Secondary Market Misrepresentation Class Actions

In secondary market misrepresentation cases, materiality does an enormous amount of work. It is the gatekeeper: no material misrepresentation, no liability.

Canada Litigation

LS

Lenczner Slaght LLP

Class Action Pursued Concerning Safety Defects With GLP-1 Drugs Mounjaro, Trulicity, & Zepbound

An application has been filed in Quebec to obtain authorization to institute a class action concerning the drugs Mounjaro, Trulicity, and Zepbound, alleging that the widely used diabetes and weight-loss medications...

Canada Litigation

SL

Siskinds LLP

Come Fly With Me: Non-Resident Class Plaintiff Picks Litigation Travel Companion For BC Class Proceedings

The British Columbia Court of Appeal has confirmed in Prince George Airport Authority Inc. v. Roy...

Canada Litigation

ML

McMillan LLP

BC Court Of Appeal Dismisses Proposed Privacy Class Action; Finds Use Of Professionals' Names Was Not Commercial Exploitation

In RateMDs Inc. v. Bleuler, 2025 BCCA 329, the BC Court of Appeal overturned certification of a proposed privacy class action, finding that the plaintiff's novel claims that use of health professionals' names...

Canada Litigation

BJ

Bennett Jones LLP

Contracting Out Of Accountability? When Crypto Meets Canadian Courtroom Control

Canada Litigation

AG

Affleck Greene McMurtry LLP

Supreme Court Of Canada Upholds Ontario Court Of Appeal Definition Of Material Change

In a decision released at the end of November in Lundin Mining Corp. v. Markowich 2025 SCC 39, Canada's top court upheld the decision of the Court of Appeal for Ontario to reinstate...

Canada Litigation

AG

Affleck Greene McMurtry LLP

The Appeal Of Bread: The Court Of Appeal For Ontario Weighs In On The Effects Of Class Action Certification

In David v. Loblaw Companies Limited, 2025 ONCA 830, Justice Zarnett wrote for a unanimous panel of the Court of Appeal for Ontario dismissing an attempt to relitigate...

Canada Litigation

MT

McCarthy Tétrault LLP

TikTok's Unauthorized Data Practices May Breach Privacy Rights

Siskinds LLP and Rice Harbut Elliott LLP have commenced a proposed privacy class action in British Columbia against TikTok on behalf of persons in Canada, other than Quebec...

Canada Media & IT

SL

Siskinds LLP

Un changement important? La Cour suprême du Canada se penche sur la définition d'un « changement important » en vertu de la législation canadienne en valeurs mobilières

La Cour suprême du Canada (la « Cour ») a potentiellement élargi la portée des normes d'information continue pour les émetteurs, en permettant qu'un recours collectif d'investisseurs aille jusqu'au procès.

Canada Litigation

MT

McCarthy Tétrault LLP

SCC's Lundin Decision Signals Broad, Contextual Approach To "Material Change"

Canada Commercial

BD

Burnet, Duckworth & Palmer LLP

Restructuring The Canadian Tobacco Industry: A Model For The Future?

Canada Insolvency

OH

Osler, Hoskin & Harcourt LLP

SCC Affirms Broad And Contextual Interpretation Of "Material Change"

Canada Litigation

GL

Goodmans LLP

A Material Change To The Meaning Of "Material Change"? – Practical Takeaways From The SCC's Decision In Lundin Mining Corp. v. Markowich

Canada Commercial

D

Dentons Canada LLP

When Is A Change Material? The Supreme Court Of Canada Clarifies Timely Disclosure Obligations In Lundin Mining Corp. V. Markowich

Canada Commercial

WD

Wildeboer Dellelce LLP

A Material Development? The Supreme Court Of Canada Addresses The Definition Of A "Material Change" Under Canadian Securities Legislation

Canada Litigation

MT

McCarthy Tétrault LLP

Supreme Court Of Canada Considers The Meaning Of "Material Change" In Canadian Securities Law And Clarifies The Test For Leave To Proceed With A Secondary Market Securities Class Action

Canada Litigation

D

Dentons Canada LLP

Lundin Mining v. Markowich: Has There Been A Material Change To "Material Change"?

Canada Commercial

BL

Borden Ladner Gervais LLP

Court Says No To End Run: Hong Kong Arbitration Blocked In Binance Class Action

Canada Litigation

LS

Lenczner Slaght LLP

Causation In Sexual Abuse Claims - The Litigator - Fall 2025

Canada Litigation

LL

Lerners LLP

Overbroad Summons Thrown Overboard: Charter Limits To The OSC's Investigatory Powers

Canada Commercial

LS

Lenczner Slaght LLP

Canadian Class Actions 101: What You Need To Know

Worldwide Litigation

TL

Torys LLP

Ontario Court Reaffirms That Compensable Loss Is A 'Fundamental Prerequisite' To Certification Of A Class Action

Canada Litigation

OH

Osler, Hoskin & Harcourt LLP

Class Actions Landscape In Canada: 2025 Mid-year Update

Canada Litigation

TL

Torys LLP

Court Of Appeal Summaries (October 20 – 24, 2025)

Canada Litigation

BM

Blaney McMurtry LLP

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Latest Videos

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Actions collectives au Canada : à l'avant-plan des litiges pharmaceutiques (Video)

FF

Fasken (French)

Class Actions In Canada: Hot Topics Shaping Tech Litigation (Video)

F

Fasken

What Makes A Case Historic? (Video)

BD

Burnet, Duckworth & Palmer LLP

What Is A Class Action Lawsuit? What Is A Mass Tort Action? What's The Difference? (Video)

GP

Gluckstein Lawyers

ESG And Shareholder Activism: Key Tips For Issuers (Video)

OH

Osler, Hoskin & Harcourt LLP

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