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Mary M. Thomson
Partner      Toronto
t  416-862-4644
f  416-862-7661
Mary M. Thomson
  • 1983 Ontario
  • Queen's University, LLB, 1981
  • University of New Brunswick, MA, 1980
  • University of New Brunswick, BA Hons., 1977

One of Canada’s pre-eminent litigators, Mary Thomson serves as head of Gowlings’ firm-wide Advocacy Group and leader of its Product Liability Group. Over the past three decades, she has represented clients in some of the country’s most high-profile legal matters, including class actions and mass tort litigation, public inquiries, and administrative tribunals. She has appeared in courts across Canada on matters involving product liability, particularly in the pharma and medical devices area as well as consumer products generally, in health law, consent law, privacy law and more.

Mary has been repeatedly singled out as a top legal practitioner by the Canadian Legal Lexpert Directory, Who’s Who Legal and other leading directories. In 2013, she was awarded the prestigious Lexpert Zenith Award for her extraordinary leadership in the legal profession.

In addition to her legal practice, Mary has taught both trial advocacy and negotiation theory. For more than a decade, she was an adjunct professor in the graduate department of the Faculty of Medicine at the University of Toronto, instructing in ethical and legal issues related to health law. She also serves as chair of Outward Bound International.


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