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.

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"

On November 28, 2025, the Supreme Court of Canada (SCC) released its long-anticipated decision in Lundin Mining Corp v Markowich (Lundin), offering significant guidance on the interpretation of "material change" under Canadian securities law.

Canada Commercial

BD

Burnet, Duckworth & Palmer LLP

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

On March 6, 2025, the Ontario Superior Court sanctioned three CCAA plans for Imperial Tobacco and two other tobacco companies, resolving over $900 billion in claims against the tobacco companies.

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

From AML To AI: Regulatory Developments In The Financial Services Landscape

OH

Osler, Hoskin & Harcourt LLP

Ontario Is Building A New "Talent Stream" PR Pathway

Canada Immigration

Moving2Canada

Artist's Resale Right Proposed In Canada's 2025 Federal Budget

AB

Aird & Berlis LLP

What Happens If You Default On A Car Loan In Ontario? (Video)

DS

Devry Smith Frank LLP

Efficient Mortgage Enforcement, Meet The Ontario Civil Court System

CP LLP

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

The Ontario Superior Court denied the certification of the proposed class action in Donegani v. Facebook, Inc. due to lack of evidence for compensable loss.

Canada Litigation

OH

Osler, Hoskin & Harcourt LLP

Class Actions Landscape In Canada: 2025 Mid-year Update

Class actions continue to shape the Canadian legal landscape. As we head toward the end of 2025, we note the following developments emerging from the class actions landscape across Canada so far this year

Canada Litigation

TL

Torys LLP

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

The appellants argued that the motion judge erred in her contextual analysis.

Canada Litigation

BM

Blaney McMurtry LLP

Class Actions: Top Ontario And Federal Cases In Q3 2025

Q3 2025 brought a range of important legal decisions shaping Ontario and federal class actions. Our summary of key rulings from the quarter includes several appellate decisions...

Canada Litigation

AB

Aird & Berlis LLP

The Continuing Challenge Of Causation In Climate Litigation

Canada Litigation

F

Fasken

Unveiling The Hidden Risks: How CVCs Can Cause Serious Harm To Patients

Canada Litigation

SL

Siskinds LLP

Is It Viable? Is It Common? British Columbia Court Of Appeal Reinforces Requirements For Certification

Canada Litigation

TL

Torys LLP

Court Says Pleading Systemic Negligence Isn't Enough For Certification – Claim Must Be Manageable

Canada Litigation

GW

Gowling WLG

British Columbia Introduces Vaping Cost Recovery Legislation (Bill 24)

Canada Healthcare

MT

McCarthy Tétrault LLP

Tendances actuelles – Octobre : Action collective en matière d'indications de prix partiel, responsabilité du fait des produits, tarifs douaniers américains, et plus encore

Canada International

MT

McCarthy Tétrault LLP

October Timely Topics: Drip Pricing Class Action Implications, Key Product Liability Cases, The Latest In U.S. Tariffs, And More

Canada Consumer

MT

McCarthy Tétrault LLP

Novel Privacy Claims And The Limits Of Class Action Certification: RateMDs Inc. v. Bleuler, 2025 BCCA 329

BL

Borden Ladner Gervais LLP

Class Actions In Canada: At The Forefront Of Pharma Litigation (Video)

Canada Litigation

F

Fasken

AI Class Actions In Canada: New Legal Ground Or The Same Old Claims?

Canada Technology

TL

Torys LLP

October Timely Topics: Drip Pricing Class Action Implications, Key Product Liability Cases, The Latest In U.S. Tariffs, And More

In a significant development for consumer protection and pricing practices, the Federal Court has certified the first class action under Canada's drip pricing provisions in Deane v. Canada Post...

Canada Consumer

MT

McCarthy Tétrault LLP

Novel Privacy Claims And The Limits Of Class Action Certification: RateMDs Inc. v. Bleuler, 2025 BCCA 329

On Sept. 22, 2025, the British Columbia Court of Appeal in RateMDs Inc. v. Bleuler, 2025 BCCA 329 issued its appeal decision setting aside the certification of a class action granted by the court below.

BL

Borden Ladner Gervais LLP

Class Actions In Canada: At The Forefront Of Pharma Litigation (Video)

The latest video from our Class Action Litigation group breaks down key procedural contrasts, new legislative risks, and creative defence strategies shaping pharma litigation in Canada today.

Canada Litigation

F

Fasken

AI Class Actions In Canada: New Legal Ground Or The Same Old Claims?

Across Canada, class action claims are being commenced against companies for their use (or alleged use) of AI tools and technology.

Canada Technology

TL

Torys LLP

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

Canada Litigation

FF

Fasken (French)

Episode 23: Tataryn And Barbiero : Dismissing Class Actions For Delay (Podcast)

When should – or must – a class action be dismissed for delay? In Tataryn v. Diamond & Diamond Lawyers LLP and Barbiero v. Pollack, the Court of Appeal for Ontario applied...

Canada Litigation

MT

McCarthy Tétrault LLP

Securities Class Action: Court Of Appeal Clarifies Public Correction Requirements

In a decision released early this month in Terry Longhair Professional Corporation v. Akumin Inc., Ontario's Court of Appeal upheld the decision of Madam Justice Akbarali...

Canada Commercial

AG

Affleck Greene McMurtry LLP

Deane v. Canada Post : la décision d'autorisation d'un recours collectif en matière d'indication de prix partiel est portée en appel

L'introduction des dispositions relatives aux indications de prix partiel dans la Loi sur la concurrence, L.R.C. 1985, c. C-34, par le projet de loi C-19 de 2022, a donné lieu à une vague d'actions collectives...

Canada Anti-trust

MT

McCarthy Tétrault LLP

Trauma-Informed Practices In Class Action Claims Administration

Since their inception in Canada, class actions and mass torts increasingly involve claimants who have endured abuse, systemic harms, or traumatic injuries.

Canada Litigation

HS

Howie, Sacks & Henry LLP

Contaminated Cooling Towers Cause Multiple Outbreaks Of Legionnaires' Disease In London, Ontario

Canada Healthcare

SL

Siskinds LLP

Deane v. Canada Post: Critical Drip Pricing Class Certification Decision Is On Appeal

Canada Litigation

MT

McCarthy Tétrault LLP

Statistically Significant, Or It Didn't Happen? Corrective Disclosure Under The Securities Act

Canada Litigation

LS

Lenczner Slaght LLP

Court Of Appeal Summaries (September 1 – September 5)

Canada Litigation

BM

Blaney McMurtry LLP

Canadians Begin Receiving Payments From $78M Auto Parts Class Action Settlement

Canada Litigation

SL

Siskinds LLP

Court Of Appeal Clarifies Meaning Of Public Correction In Upholding Decision Allowing Securities Class Action To Proceed

Canada Litigation

AG

Affleck Greene McMurtry LLP

La Cour supérieure du Québec refuse l'autorisation d'une action collective en droit de la consommation

Canada Litigation

MT

McCarthy Tétrault LLP

The Superior Court Of Québec Refuses To Authorize A Class Action In Consumer Law

Canada Litigation

MT

McCarthy Tétrault LLP

Ontario Superior Court Rejects Pre-Certification Discovery In Children's Homes Class Action

Canada Litigation

BJ

Bennett Jones LLP

BC Court Rules Class Action Plaintiffs Cannot Delay Pre-Certification Applications If The Plaintiff Has Not Applied For Certification

Canada Litigation

BJ

Bennett Jones LLP

The Case For Gender-Specific Class Actions In Light Of Failed Government Policies

Canada Litigation

HS

Howie, Sacks & Henry LLP

Decertification Denied: Drawing The Line Between Consumer And Business Subscribers, Once Again

Canada Litigation

MT

McCarthy Tétrault LLP

Federal Court Of Appeal Dismisses Class Action Certification Due To Unavoidable Individualized Inquiries

Canada Litigation

BJ

Bennett Jones LLP

Copyright Notice And Notice: The Voltage Pictures Case

Canada Litigation

MT

McCarthy Tétrault LLP

Can You Be Sued In A Securities Class Action When The Correction Causes No Price Decline?

Canada Litigation

MT

McCarthy Tétrault LLP

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Latest Videos

See more

Class Actions In Canada: At The Forefront Of Pharma Litigation (Video)

F

Fasken

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

FF

Fasken (French)

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

GP

Gluckstein Lawyers

Understanding Alberta's Litigation Landscape (Video)

BD

Burnet, Duckworth & Palmer LLP

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

OH

Osler, Hoskin & Harcourt LLP

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