Osler’s National Disputes team advises on and solves business-critical issues for Canadian, as well as global, organizations.
Best known for handling multijurisdictional class actions and complex corporate/commercial litigation, we defend major institutional clients on high-profile (“bet-the-company”), precedent-setting cases across various industries and at all levels of courts in Ontario, Alberta, Québec, British Columbia and most other provinces, as well as in the Federal Court and the Supreme Court of Canada. We regularly appear in hearings before a variety of provincial and federal tribunals, such as the Financial Services Tribunal, the Ontario Municipal Board, the Environmental Assessment Board and the Ontario and Alberta Securities Commissions and represent clients in various forms of alternative dispute resolution.
While always ensuring our clients are litigation ready, we help our clients develop effective risk management strategies to proactively address potential exposures and mitigate the threat of complex litigation. However, when litigation is unavoidable, we defend our clients in a strategic, coordinated and cost-effective manner. Osler’s Dispute Resolution & Risk Management team has experience in all types of disputes including constitutional and public law, corporate governance, securities, defamation, energy and natural resource, environmental, franchise, consumer protection, intellectual property, privacy, pension and benefits, product liability, professional negligence, tax disputes and white-collar defence. We also leverage the expertise of Osler Works – Disputes, our specialized litigation support group composed of multidisciplinary professionals with dedicated expertise in legal technology, process improvement and management, project management and eDiscovery services.
Areas of Focus
Key Contacts
National Chair
Partner, Disputes, Toronto
Latest Insights
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Blog March 31, 2026
A strike of genius: strategic applications in class actions
The B.C. Court of Appeal’s decision in Hvitved v. Home Depot reaffirms that applications to strike remain a key tool in class action defence.
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Osler Update March 24, 2026
A client may terminate a service agreement to further its own commercial interests, Superior Court of Québec rules
The decision reaffirms the discretionary nature of a client’s right to terminate a service contract.
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Blog March 20, 2026
Aboriginal title and private property: divergent approaches in Cowichan and Wolastoqey
An examination of two decisions and implications for Canadian governments, Indigenous Nations and private property owners.
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Blog March 2, 2026
Ontario Construction Act amendments now in effect
Amendments include modifications to the provisions on prompt payment, adjudication and the payment of holdback.
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Osler News March 17, 2026
179 Osler lawyers and 33 practice areas recognized in the 2026 Canadian Legal Lexpert Directory
Osler has been recognized as a market leader in the 2026 edition of The Canadian Legal Lexpert Directory.
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Osler News February 19, 2026
Osler welcomes 11 new partners and three new counsel in 2026
Congratulations to our 11 new partners and three new counsel from our offices in Toronto and Montréal.
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Osler News February 13, 2026
Larry Ritchie appointed to FSRA’s Board of Directors
Ontario has appointed Larry Ritchie as a member of the Financial Services Regulatory Authority of Ontario’s Board of Directors.
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Media Mentions December 26, 2025
Investors accuse Ontario-based Anaergia of misrepresenting growth prospects in class-action lawsuit – The Globe and Mail
“If it goes the distance, it will be a multiyear process for sure," partner Craig Lockwood tells The Globe and Mail.
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