In a world where individuals may feel powerless against large corporations, the Siskinds class action team harnesses the strength of many, uniting as a group or class, to level the playing field and provide access to justice for our clients. Over the years, we have recovered billions of dollars for our clients.

If you have been the victim of a large-scale wrong, please call 1.800.461.6166 for a free consultation.

Top Canadian plaintiff-side class action firm

As the largest plaintiff-side class action team in Canada, with offices in Toronto, Ontario; Vancouver, British Columbia; London, Ontario; and Québec City, Quebec, we’ve earned our place as a leading firm, acknowledged by Chambers & Pa rtners, T he Best Lawyers in Canada™, Canadian Legal Lexpert® Directory and Lexpert®/American Lawyer Guide to the Leading 500 Lawyers in Canada.

Our class action lawyers have extensive experience handling complex class actions in a wide range of areas, including pharmaceutical and medical devices, consumer protection, securities, price-fixing, environmental, and human rights and institutional abuse. We have commenced actions across the country, and most of our actions are national in scope.

The Federal Court is undertaking a comprehensive review of the Federal Court Rules. Siskinds, along with several other law firms, filed a submission in response.

Propose a class action

We are always exploring potential class actions. Many of our cases originate from individuals reaching out to us about a wrong. If you have an idea for a potential class action, please complete the ‘Propose a Class Action’ form.

Stay informed

Read our Guide to Class Actions to learn about the advantages of a class action, common types, and the typical duration from initiation to resolution or settlement.

View the list of our current class actions and mass torts below to provide you with access to the information you need.

Most frequently searched actions are marked with a star and located at the top of the list.

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Name:	Type:
Ozempic / GLP-1 Drugs . This class action is frequently searched.	Pharmaceutical & Medical Devices	View Ozempic / GLP-1 Drugs Join Ozempic / GLP-1 Drugs
Talcum Powder . This class action is frequently searched.	Pharmaceutical & Medical Devices	View Talcum Powder Join Talcum Powder
Cantaloupes contaminated with salmonella . This class action is frequently searched.	Consumer Protection	View Cantaloupes contaminated with salmonella Join Cantaloupes contaminated with salmonella
Group Home Litigation – Hatts Off Inc. . This class action is frequently searched.	Humanitarian	View Group Home Litigation – Hatts Off Inc. Join Group Home Litigation – Hatts Off Inc.
Surgical Staplers . This class action is frequently searched.	Pharmaceutical & Medical Devices	View Surgical Staplers Join Surgical Staplers
JUUL e-cigarettes . This class action is frequently searched.	Consumer Protection	View JUUL e-cigarettes Join JUUL e-cigarettes
Mutual Fund Fees . This class action is frequently searched.	Securities	View Mutual Fund Fees Join Mutual Fund Fees
Auto Parts . This class action is frequently searched.	Price Fixing	View Auto Parts Join Auto Parts
Elmiron (pentosan polysulfate) . This class action is frequently searched.	Pharmaceutical & Medical Devices	View Elmiron (pentosan polysulfate) Join Elmiron (pentosan polysulfate)
Paraquat (Gramoxone®) . This class action is frequently searched.	Environmental	View Paraquat (Gramoxone®) Join Paraquat (Gramoxone®)
Marriott Privacy Breach . This class action is frequently searched.	Consumer Protection	View Marriott Privacy Breach Join Marriott Privacy Breach
Xeljanz and Xeljanz XR (tofacitinib) . This class action is frequently searched.	Pharmaceutical & Medical Devices	View Xeljanz and Xeljanz XR (tofacitinib) Join Xeljanz and Xeljanz XR (tofacitinib)

Types of Class Actions

Working for You in Many Areas of Your Life

Our class action lawyers have extensive experience litigating large, complex class actions in a variety of practice areas, including price-fixing, securities, pharmaceuticals or medical devices, consumer protection, product liability, environmental issues, and institutional abuse or humanitarian cases.

Consumer Protection

Misrepresentation of products or services takes advantage of people’s trust. We try to reset the field for the consumers who have been misled.

Pharmaceutical Litigation

When medical devices and medications are not properly tested or risks are not sufficiently communicated, we get the support you unexpectedly need.

Securities

Full, fair and timely disclosure of facts is required; if not, we sue companies that violate the Securities Act and seek compensation for investors.

Institutional Abuse

Domestically and abroad, people continue to suffer due to the negligence – deliberate or unintentional – of others. We can apply our legal abilities to their needs.

Price Fixing

Consumers can purchase products that are deliberately over-priced. We aim to correct the deception and recover the overage that consumers paid.

Product Liability

Defective or unsafe products can enter your life through negligent production or misleading claims. Companies are responsible for the integrity of their work.

Environmental

Careless or illegal actions that damage the environment can impact a large number of people in extensive ways. We can define and seek the compensation required.

eDiscovery

Siskinds eDiscovery team includes a group of lawyers and project managers with experience collectively providing counsel on the discovery phase of litigation and regulatory proceedings.

Our Successes

Since 1992, we have been at the forefront of the evolution of class action law.

Counsel and Mediator - Class Actions, Professional negligence, Commercial Litigation

Dawn Sullivan

Counsel – eDiscovery and Class Actions

Erika Provencher

Lawyer - Class Actions, Civil Litigation

Francis-Olivier Angenot-Langlois

Associate - Class Actions, Professional Negligence, Civil Litigation

News & Views

Blog

Keep up to date with the latest legal insights authored by Siskinds LLP lawyers, covering a diverse range of topics, including class actions.

View Blog

12 Mar 2025 By Jordyn Liebman

Class action settlements and notice

Class action litigation can take several years to resolve and reach a potential settlement. …

5 Mar 2025 By Ellen Yoo

I am affected by a class action. What are my options?

Imagine finding out that thousands of people, just like you, have been impacted by the same …

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Toll Free: 877 672 2121
Class Actions Toll Free: 1 800 461 6166
Phone: 519 672 2121

Class Actions

There's strength in numbers.

Top Canadian plaintiff-side class action firm

Propose a class action

Stay informed

Class Actions Listing

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Types of Class Actions

Working for You in Many Areas of Your Life

Consumer Protection

Pharmaceutical Litigation

Securities

Institutional Abuse

Price Fixing

Product Liability

Environmental

eDiscovery

Our Successes

The largest plaintiff-side class action team in Canada

Anthony O’Brien

Michael Robb

Georgia Hamilton

Caroline Perrault

Eloïsa Larochelle

Frédérique Langis

Ellen Yoo

Charles Wright

Daniel Bach

Alison McBurney

Linda Visser (She/Her)

Sana Ebrahimi

Bridget Moran

Stefani Cuberovic (She/Her)

Claude Desmeules

Garett Hunter

Gigi Pao

Marie-Maud Côté-Rouleau

Jordyn Liebman

Jill McCartney

Alex Dimson

James Boyd

Tyler Planeta

Karim Diallo