Litigation

Overview

Osler’s Litigation Department is one of the largest and most accomplished dispute resolution teams in Canada. Years of careful recruiting and rigorous training has allowed us to develop deep expertise in complex commercial litigation as well as the litigation specialties that major corporations call on most often: class actions, corporate governance and securities, insolvency, product liability, pension and employment, intellectual property, major contractual disputes, competition, tax as well as noteworthy constitutional and public law matters.

While setting new standards of accomplishment in winning commercial litigation, we also assist clients in identifying and mitigating risks that could lead to new legal exposures. Our deep knowledge of each client’s business enables us to intervene effectively to avoid lengthy proceedings or to achieve cost-effective and innovative solutions through early prevention or alternative dispute resolution.

Our litigators appear as counsel in all levels of courts in Ontario, Alberta, Québec and most other Canadian provinces, as well as in the Federal Court and the Supreme Court of Canada. Many also participate regularly 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 Securities Commission. We have represented clients in numerous private arbitrations and mediations. Our discovery management specialists work strategically with our litigators and clients to deliver an array of customized, cost effective and efficient discovery solutions. In short, Osler is home to a critical mass of top litigators in their respective fields—with the track records and the loyal and growing client following to prove it. Ask us about:

  • Appeals
  • Class Actions
  • Competition/Antitrust Litigation
  • Constitutional and Public Law
  • Construction and Infrastructure Litigation
  • Corporate Governance and Securities Litigation
  • Cross-Border Litigation
  • Defamation (Libel and Slander)
  • Discovery Management
  • Energy and Natural Resources Litigation
  • Environmental Litigation
  • Franchise Litigation
  • Insolvency and Restructuring
  • Intellectual Property Litigation
  • International Commercial Arbitration and ADR
  • Municipal Litigation
  • Pensions and Benefits Litigation
  • Product Liability
  • Professional Negligence
  • Tax Dispute Resolution

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Related Expertise

Deborah Glendinning

Partner, National Chair, Litigation
Toronto

Maureen Killoran Q.C.

Partner, Litigation
Calgary

  • Chambers Canada: Canada’s Leading Lawyers for Business, 2016-2018, recognized in the area of Litigation: General Commercial (Nationwide- Canada).
    • "The firm is very professional and very highly regarded."
  • Chambers Canada: Canada’s Leading Lawyers for Business, 2016-2018, recognized in the area of Litigation: General Commercial (Ontario).
    • "They really understand the business and they are extremely responsive. They don't try and over-lawyer files and their answers are always practical."
    • "They are a very well-respected group." 
    • "We have been impressed by their expertise in dispute resolution."
  • Chambers Canada: Canada’s Leading Lawyers for Business, 2016-2018, recognized in the area of Litigation: General Commercial (Alberta).
    • "They have good bench strength and have really taken the time to learn our business. They are bright, hard-working individuals."
    • "They are excellent and I have really enjoyed working with them. They have some really great young talent."
    • "They are really strong counsel, and frequently appear on top cases."
  • Chambers Canada: Canada’s Leading Lawyers for Business, 2016-2018, recognized in the area of Litigation: General Commercial (Quebec).
    • "We feel well defended and they always give us sound advice." 
    • "They have grown up with product liability and class action files."
  • Benchmark Litigation Canada, 2017, Osler's Litigation Group - Ontario -  Highly Recommended.
  • Benchmark Litigation Canada, 2017, Osler's Litigation Group - Quebec - Recommended.
  • Benchmark Litigation Canada, 2017, Osler's Litigation Group - Alberta - Recommended.
  • The Canadian Legal Lexpert Directory, 2015-2017, Osler’s Litigation - Securities Group Toronto, Ontario, Consistently recommended.
  • The Canadian Legal Lexpert Directory, 2015-2017, Osler’s Litigation - Intellectual Property Group Toronto, Ontario, Repeatedly recommended.
  • The Canadian Legal Lexpert Directory, 2015-2017, Osler’s Litigation - Intellectual Property Group Ottawa, Ontario, Consistently recommended.
  • The Canadian Legal Lexpert Directory, 2015-2017, Osler’s Litigation - Product Liability Group Toronto, Ontario, Repeatedly recommended.
  • The Canadian Legal Lexpert Directory, 2017, Osler’s Litigation - Corporate Commercial Group Toronto, Ontario, Most frequently recommended.
  • The Canadian Legal Lexpert Directory, 2015-2017, Osler’s Litigation - Corporate Commercial Group Montréal, Québec, Consistently recommended.
  • The Canadian Legal Lexpert Directory, 2015-2017, Osler’s Litigation - Corporate Commercial Group Calgary, Alberta, Repeatedly recommended.
  • The Canadian Legal Lexpert Directory, 2015-2017, Osler’s Litigation - Corporate Tax Group Calgary, Alberta, Consistently recommended.
  • The Canadian Legal Lexpert Directory, 2015-2017, Osler’s Litigation - Corporate Tax Group Toronto, Ontario, Most Frequently recommended.
  • The Legal 500, 2017, Osler ranked in Tier 1, recognized in the area of Dispute Resolution (Quebec).
  • The Legal 500, 2017, recognized in the area of Dispute Resolution (Ontario).
  • The Legal 500, 2017, recognized in the area of Dispute Resolution (Alberta).
  • Chambers Global: The World’s Leading Business Lawyers, 2016-2017, recognized in the area of Dispute Resolution.
    • "[Osler] is a well-oiled machine and I wouldn't hesitate to recommend them for large country-wide litigation matters."
  • Benchmark Litigation Canada, 2016, Osler Lawyers recognized in the area of Dispute Resolution.
  • Lexpert’s Guide to the Leading US/Canada Cross-Border Litigation Lawyers in Canada, 2016, Osler Lawyers recognized in the area of Dispute Resolution. 
  •  Lexpert’s Special Edition on Canada’s Leading Litigation Lawyers, 2016, Osler Lawyers recognized in the area of Dispute Resolution.
  • The Canadian Legal Lexpert Directory, 2016,  recognized Osler’s Litigation Department as “most frequently recommended” for Class Actions, and “consistently recommended” for Corporate/Commercial Litigation and Securities Litigation, with several of our legal practitioners acknowledged as leading individuals in the field.
  • The Canadian Legal Lexpert Directory, 2015, Osler’s Litigation - Corporate Commercial Group Toronto, Ontario, Consistently recommended.