Jean-Sébastien Dupont > Smart & Biggar > Montreal, Canada > Lawyer Profile

Smart & Biggar
SUITE 3300

Work Department

IP Litigation & Enforcement




Jean-Sébastien Dupont, a principal in Smart & Biggar’s Montreal office and Practice Group Leader of the IP Litigation and Legal group, is an accomplished IP litigator committed to providing legal solutions and achieving results for his clients. Focusing on intellectual property litigation in the areas of trademarks, patents and copyright, Jean-Sébastien is involved in all aspects of litigation from preparing and initiating new court proceedings to bringing complex cases to trial. Clients rely on him to provide decisive guidance on the best course of action. He is diligent in preparing and advocating for clients in court, while anticipating issues and challenges that may arise from the opposing side. His client activities involve small to large Canadian and foreign corporations in different fields such as media (Québecor, Rogers Media, Bell Media), advanced materials (Tekna), tobacco (Imperial Tobacco Canada), hockey equipment and apparel (Bauer Hockey), transport (Canadian National Railway, Air Canada) and construction (Lainco). Jean-Sébastien has been recognized internationally as a leader for Intellectual Property by Benchmark Litigation, Best Lawyers , Euromoney LMG Expert Guides, IAM Patent 1000, Lexpert, Managing IP, WIPR  and World Trademark Review.  Recently, he was on Benchmark Litigation’s “Hot List” of litigators under 40, Lexpert’s “Leading Lawyer under 40” list and named a “Rising Star in Patents” by Euromoney LMG Expert Guides. LLB, LLM. Registered Trademark and Patent Agent. Called to the Québec Bar in 2010.


English, French


  • Associate, Intellectual Property Institute of Canada
  • Member, Canadian Bar Association
  • Member, Association du jeune Barreau de Montréal


Lawyer Rankings

Canada > Intellectual property

The leading intellectual property boutique in Canada, Smart & Biggar focuses exclusively on IP law from its five offices across the country. The team’s generous national footprint was further boosted in September 2023 following its combination with fellow Canadian IP boutique, Ridout & Maybee, which added an additional 30 lawyers to the group. It also plugs into a significant international platform through its recent membership of the IPH Limited Group, which brings together a network of six firms across nine jurisdictions. In Toronto, Mark Evans is a go-to specialist for contentious and non-contentious trademark matters, while IP litigator Mark Biernacki contributes strong experience in an array of patents, trademarks, copyrights and industrial designs. The Toronto team also includes IP disputes expert Sheldon Hamilton; Yoon Kang, who specializes in life sciences patent litigation and prosecution; life sciences expert Nancy Pei; managing director Matthew ZischkaGraham Hood, who was appointed trademarks practice group leader in August 2023, and Urszula Wojtyra. In Ottawa, key figures include Steven Garland, a 30-year veteran in IP litigation; life sciences patents and chemicals/bio practice group leader Daphne Lainson, who was also appointed in August 2023; Elliott Simcoe, who draws on over two decades of experience in electrical and computer-related matters; and Kohji Suzuki, who utilizes a mastery of strategic IP enforcement. Montreal-based litigator François Guay is also highly regarded. Also in August 2023, Jean-Sébastien Dupont in Montreal was promoted to IP litigation practice group leader and Jonas Gifford was appointed patents engineering and ICT (EICT) head.