This is a photo of Guillaume Mercier Photo




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.

Guillaume has acted for leading corporations and for financial institutions in complex commercial disputes and class actions. He has also represented physicians and other professionals in front of Quebec civil and disciplinary tribunals.

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.