William Marchetti-Berry is a litigation lawyer within the civil and commercial litigation group. His practice focuses primarily on the defence in class action proceedings, particularly those involving the liability of institutions and companies as employers under the doctrine of respondeat superior.
He handles complex matters involving shareholder oppression, injunctions and safeguard orders, as well as disputes arising from breaches of non-solicitation and non-competition clauses. His expertise also extends to commercial leasing, where he represents both landlords and tenants in disputes concerning the interpretation, performance or termination of commercial leases.
William advises and represents a diverse clientele of businesses of all sizes in contexts where the legal, financial and strategic stakes are particularly high. He is distinguished by his ability to anticipate risks, develop effective strategies and provide tailored solutions whether in urgent proceedings or in the long-term management of a dispute.
Over the years, William has appeared on numerous occasions before the Court of Québec, the Superior Court of Québec and the Québec Court of Appeal, including in high-profile cases. His courtroom confidence was forged during his final year of law school, through a clerkship with a judge of the Superior Court of Québec, a formative experience that sharpened his advocacy skills and his commitment to defending his clients with rigour and determination.