Claude Marseille, Ad. E. How to pronounce this name. Partner | Montréal

• Representing a major power producer in Quebec before the Supreme Court of Canada regarding the legality of its easements on private lands across the province

• Defending the interests of pharmaceutical companies in the context of failure to warn, product liability class actions for medications and medical devices

• Defending the interests of a major food manufacturer in the context of a class action attacking the legality of the terms of termination of a pension plan

• Defending the interests of a major pharmacy franchisor in Quebec in the context of a class action attacking the legality of the royalty structure included in its franchise agreements

• Defending the interests of a group of pharmacies in the context of a class action attacking the price of prescription drugs charged to privately insured clients

• Defending the interests of the City of Montréal against an action attacking the validity of a municipal loan to the entity that operated the BIXI bike sharing system

• Represented a major supplier of power equipment in a commercial arbitration, in the context of the Muskrat Falls project in the Canadian Maritimes

• Successfully defended the interests of a major multi-level marketing company against a national class action alleging violations to the Competition Act, before the Federal Court of Appeal

• Successfully defended the interests of flight schools against injunctive proceedings and a nuisance class action related to their activities on the south shore of Montréal

• Successfully defended the interests of two rendering plants in the cities of Montréal and Lévis against nuisance class actions related to their operations

• Successfully defended the interests of Canada's leading producer of ready-to-eat cereals and convenience foods in the context of a national class action alleging misrepresentation as to the caloric content of its reduced-sugar products

• Successfully defended the interests of a Class 1 Canadian railway company against a nuisance class action related to its operations on the Island of Montreal

• Successfully defended the City of Montréal against an action in damages following the cancellation of a project for a municipal waste incinerator. The claim gave rise to one of the longest trials (376 days) in the history of Quebec, and a precedent-setting decision by the Supreme Court of Canada on solicitor-client privilege in Quebec.

Claude was awarded with the honorific title Advocatus Emeritus (AdE) by the Barreau du Québec "to recognize the excellence of exemplary members and highlight an exceptional career". He is also recognized as one of Canada's leading litigation lawyers in the following publications:

• The Legal 500 Canada – 2024–2025 (Dispute Resolution: Quebec)

• The Best Lawyers in Canada – 2022–2025 (Alternative Dispute Resolution, Class Action Litigation, Construction Law, Corporate and Commercial Litigation, Product Liability Law)
  

• Chambers Canada Legal Guide – 2020–2025 (Litigation: General Commercial – Quebec)

• Thomson Reuters Stand-out Lawyers 2025 – Independently Rated Lawyers (As nominated by senior in-house counsel)

• The Canadian Legal Lexpert Directory 2025 (Life Sciences & Health; Class Actions, Litigation – Corporate Commercial, Litigation – Product Liability)
  

• Benchmark Canada: The Definitive Guide to Canada's Leading Litigation Firms and Attorneys – 2018–2025 (Litigation Star)

• Lexpert Special Edition: Technology and Health Sciences 2024

• Lexpert Special Edition: Litigation – 2023–2024

• Lexology Index: Life Sciences – 2021, 2024 (Life Sciences – Product Liability)

• Lexology Index: Product Liability Defence – 2021–2022, 2024

• Lexology Index: Canada – 2021–2024 (Life Sciences, Product Liability Defence)

• Lexology Index: Arbitration 2020

Claude was awarded the Lifetime Membership Award for "exceptional contribution to the goals of the association" by the Young Bar Association of Montreal. In 2021, The Advocates' Society also awarded him the 2021 Québec Excellence in Mentoring Award.

Claude is a governor for life of the Quebec Bar Foundation. He has been actively involved in leadership roles of the Canadian Bar Association (Quebec Division), the Barreau du Québec, the Barreau de Montréal, the International Association of Young Lawyers and the Young Bar Association of Montreal. He presided at the Committee of the Barreau du Québec on Solicitor-Client Privilege and the Use of Technology.

Claude is adjunct professor for the law of evidence at the Faculty of Law of Université de Montréal, and has taught civil liability at the Quebec Bar School. He has published widely in legal literature, having authored a number of books, articles and book chapters on class actions, the law of evidence and e-commerce law. He also acts as editorial advisor for the Code de procédure civile annoté at Lexis Nexis.

In 2022 Claude was named a fellow of the Construction Lawyers Society of America. 

He has been serving for several years on the jury of the Quebec In-House Counsel Awards.

• Co-author : Charter Rights and State Liability: SCC Reiterates Threshold for Claims Against the State for Damages
  Blakes Bulletin on Litigation & Dispute Resolution, September 30, 2024.
• Co-author : Quebec Court of Appeal: Voluntary Refund Program Insufficient to Prevent Class Action Authorization
  Blakes Bulletin on Litigation & Dispute Resolution and Class Actions, July 4, 2024.
• Co-author : R. v. Pryde: Quebec Judge Declares New Provision of French Language Charter Inoperable
  Blakes Bulletin on Litigation & Dispute Resolution, June 13, 2024.
• Co-author : Quebec Government Launches a Public Consultation on the Reform of Class Action Proceedings
  Blakes Bulletin on Class Actions, June 8, 2021.

Admitted to the Quebec Bar – 1987
BCL/LLB, McGill University – 1986