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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

Mary M. Thomson is the head of Gowlings' firm-wide Advocacy and Product Liability groups. She is one of Canada’s pre-eminent practitioners in the areas of class actions, mass tort litigation, product liability, pharma litigation, health law, consent law and privacy issues. Mary has extensive experience in representing clients with respect to pharmaceutical products, medical devices, natural health products, food, cosmetics as well as an array of consumer products (LED lighting, light fixtures, heating pads, alarm systems, label makers, fibreglass, headphones, insulating foam, BPA products to name a few).

Mary has 30 years of experience representing clients before the courts, public inquiries, professional regulatory bodies and other administrative tribunals. Mary also acts as Canadian national co-ordinating counsel in class actions, managing complex litigation across Canada. She combines her substantial courtroom experience with an ability to supervise high functioning teams. Legal teams directed by Mary develop thorough legal analysis, deliver solid value and provide dedicated client service. Mary works closely with clients, assisting them in defining and implementing a strategic plan for their litigation. She counsels clients on risk assessment, mitigation and management.

Mary has taught both trial advocacy and negotiation theory throughout her career. She served for more than a decade as an adjunct professor in the graduate department of Health Administration in the Faculty of Medicine at the University of Toronto, instructing in ethical and legal issues in the health law field, and taught in the area of bio-medical research for a number of years. 


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