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This is a photo of Guillaume Mercier




Contact by email at [email protected]

t. +1 514-397-4965


Law School

McGill University

Bar Admission

Québec, 2018

Guillaume Mercier is an Associate in the litigation group of the Montreal office. He practices primarily in civil, commercial and administrative litigation as well as in professional liability and in white collar defense and investigations.

Guillaume is known for his creativity in developing legal arguments, his efficiency, and his ability to analyze and synthetize complex information. He has strong experience in making written and oral representations before the Quebec civil and disciplinary tribunals in the context of class actions, judicial review applications, professional and disciplinary liability, contractual litigation, construction law and injunctions. Guillaume has also published articles and gave conferences in health law.

Guillaume has completed a bachelor’s degree in civil law and common law (B.C.L./L.L.B.) at McGill University, during which he made the Dean’s Honour List. He has also completed a clerkship with the Honorable David R. Collier of the Quebec Superior Court. During his studies, Guillaume has worked as a director of a legal information clinic.

Guillaume was admitted to the Québec Bar in 2018. He is a member of the Canadian Bar Association and of the Young Bar of Montreal.