Marie Lussier

Marie Lussier
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Marie’s practice extends to all facets of branding and advertising law, and her expertise lies in helping businesses acquire, manage and defend their trademarks in Canada and abroad.

Marie has worked with and managed the international trademark portfolios of many of Canada’s largest corporations and the Canadian portfolios of some of the world’s largest trademark owners. She is ranked as a leading trademark lawyer by both World Intellectual Property Review and WTR 1000 – the World’s Leading Trademark Professionals.

Marie is a member of the Institute of Intellectual Property of Canada (IPIC). She served for several terms as an instructor in its trademark agent training course and for two terms on the committee charged with administering the trademark agent examination. She is also the former Director of the McGill-IPIC course on Managing Trademark Disputes. Marie is also actively involved with the International Trademark Association (INTA). She has worked on several of its committees, including the Trademark Reporter Committee, the Building Bridges Committee, and is a former co-chair of the Law and Practice North America Subcommittee of the INTA Bulletin. In 2021, she was appointed to the Trademark Examining Board of the newly created College of Patent Agents and Trademark Agents.

Marie is fluent in both French and English and has studied and worked in both languages. She received a B.Sc. in 1987 from Queen’s University, specializing in Life Sciences. She then attended McGill University and obtained her common and civil law degrees in 1991. While at McGill, she was Comments Editor of the McGill Law Journal. Subsequently, as part of her articles, Marie clerked with Madam Alice Desjardins of the Federal Court of Appeal.

Education & Memberships


Called to the Ontario Bar, 1994
McGill University - Faculty of Law, B.C.L, LL.B (National Programme), 1991
Queen's University, B.Sc., 1987


Institute of Intellectual Property of Canada (IPIC)
International Trademark Association (INTA)

Awards and Recognition

WTR 1000: The World’s Leading Trademark Professionals, 2024
World Intellectual Property Review Leaders Directory, 2024

Professional Designations

Registered Trademark Agent