Canada: Class Actions

Canadian courts are increasingly confronted with parallel class actions across multiple provinces, particularly in life sciences litigation involving the same drug or device.

Class action litigation serves a purpose beyond resolving individual claims—it can drive systemic change and corporate accountability. Senior Counsel Steve Rastin explores why these cases require time, patience, and precision, from securing impartial experts to navigating complex certification requirements, all while maintaining a commitment to fairness for every plaintiff.

The Ontario Court of Appeal issued decisions on several civil matters during the week of May 11, 2026, addressing complex issues ranging from insurance coverage disputes and corporate veil piercing to anti-SLAPP motions and administrative tribunal independence. These rulings provide important guidance on summary judgment procedures, causation analysis in multi-event losses, and the scope of deliberative secrecy protecting tribunal communications.

Ontario's class actions landscape shifted in Q1 2026 as five pivotal court rulings redefined certification standards, clarified the boundaries of cross-border evidence, and addressed the interplay between overlapping proceedings.

In an era marked by digital innovation and constant connectivity, personal information has never been more accessible and easily sourced. In this environment, Chief Privacy Officers (CPOs)...

Lorsqu’un demandeur et ses avocats manquent à leur obligation de faire progresser une action collective, le tribunal pourra présumer que le demandeur s’est désisté.

Evolving legislation, court decisions, and workplace practices are reshaping employer obligations and risks across Canada and the United States.

In 2026, the Canadian class action landscape remains exceptionally active, establishing the country as a leading jurisdiction for class action development. The subsequent review will discuss the 2025...

Senior Managing Director Bradley Heys, Managing Director Robert Patton, and Consultant Jielei Mao have released their annual report reviewing securities class actions in Canada.