François Guay > Smart & Biggar > Montreal, Canada > Lawyer Profile

Smart & Biggar
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Work Department

IP Litigation & Enforcement




François Guay is a principal in Smart & Biggar’s Montreal office. He has over 40 years of in-depth IP litigation experience and is among the most experienced IP litigators in Canada. François has appeared before the Courts of Québec and the Federal Court of Canada, and his case work in Marlboro Canada Limited v Philip Morris Products SA and Bell Canada et al v 1326030 Ontario Inc dba et al. were both recognized with a “Milestone Case of the Year Award” from Managing Intellectual Property. Most recently, François was named Canada’s IP Litigator of the Year by Benchmark Canada and IP lawyer of the Year by Best Lawyers. He is also listed in Chambers Global and CanadaExpert Guides: Patents and Trade Marks, Benchmark CanadaThe Best Lawyers in CanadaWho’s Who Legal: Patents and TrademarksWho’s Who Legal, IAM Patent 1000WTR 1000, IAM Global Leaders, World IP Review Leaders, Lexpert, and Managing Intellectual Property’s IP Stars Handbook: Trademarks. François is a Fellow of IPIC. Member of CBA, INTA, AIPPI, ECTA, LIDC and the International Wine Lawyers Association. LLL. Registered Trademark Agent. Called to the Québec Bar in 1982.


English, French


  • Fellow, Intellectual Property Institute of Canada
  • Member, International Trademark Association
  • Member, International Association for the Protection of Intellectual Property (AIPPI)
  • Member, European Communities Trade Mark Association
  • Member, International League of Competition Law (LIDC)
  • Member, Association des juristes pour le droit de la vigne et du vin
  • Member, Canadian Bar Association


University of Montreal, LL.L., 1981

Lawyer Rankings

Canada > Intellectual property

(Hall of Fame)

François GuaySmart & Biggar

Smart & Biggar is Canada’s leading IP and technology boutique, leveraging over 130 years in the market and five offices nationally. In Toronto, Mark Evans is a star name for trademark protection, management and counselling, also enjoying a track record in precedent setting disputes, whereas Nancy Pei is a market leader for pharmaceutical patents and litigation, as well as operations within the life sciences sector; the duo are based alongside Matthew Zischka, the firm’s managing partner, Sheldon Hamilton, who leads the litigation group, as well as Mark Biernacki, an up-and-coming partner for all-manner of disputes, including trademark, copyright, patent and industrial design proceedings within the higher courts. The Ottawa office is home to firm chair, Daphne Lainson, as well as Elliott Simcoe who leads the patents, electrical and mechanical group, and Steven Garland who has undertaken all-manner of critical disputes for names such as Amazon, McDonald’s and Shell. François Guay serves as chair of the IP strategy group, operating from the Montreal office, and has notably provided representation in over 100 jurisprudence cases including those with patent, industrial design and copyright elements.