Sébastien Roy

Claudia Déry is the Canadian co-head of our construction and engineering team. She has advised and represented before the courts a number of clients in construction-related matters, including major public-private partnership projects. She has experience in drafting tender documents and construction law topics and conducts the annual review of construction case law for the Canadian Bar Association. She has been ranked in the Best Lawyers in Canada since 2006 in the area of construction ...

Peter Wiazowski practises corporate finance and securities law, focusing on cross-border debt capital markets and banking. With extensive experience in liability management, he represents borrowers and lenders, and issuers and underwriters, in secured loans, debt offerings, debt tender offers and strategic refinancings, as well as debt finance solutions for M&A, asset portfolio optimization and project finance. Mr. Wiazowski is a seasoned liability management practitioner, representing bo...

Jean-François Forget is a partner in the Litigation & Dispute Resolution Group, where he acts for many public and private companies on international, national, and local matters. His practice focuses on business and commercial law disputes and touches on all aspects of dispute resolution, from advice on complex litigation matters to representing clients before all levels of courts, obtaining urgent extraordinary remedies as well as engaging in alternate dispute resolution processes...

Sophie is an accomplished litigator and is recognized for her ability to lead complex files in a wide range of commercial disputes, penal procedures and regulatory proceedings. She has an impressive record in extraordinary proceedings such as injunctions, mandamus proceedings and Anton Piller orders. She has also acted in defence in class action proceedings and in constitutional matters that have been pleaded before the Supreme Court of Canada. In addition to her litigation practice, Sophie a...

François Laplante is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. François, who practices law in Montréal, Quebec, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which François is held by other top lawyers in the same geographic and legal practice area.

Jean-François is a partner in the Business Law Group in our Montreal office. He works in the technology, media and telecommunications industries, as well as in life sciences and health. He is particularly experienced in mergers and acquisitions, start-up companies, venture capital and business services. Jean-François advises many companies – start-ups and well-established alike – in their various stages of growth, from inception to sale. He has a clear understanding ...

Sophie Lamonde is the Managing Partner of our Montréal office. Her practice is directed primarily to the areas of mergers & acquisitions and private equity, with a particular focus on cross-border transactions. Sophie’s extensive corporate law experience includes advising Canadian and international clients in acquisitions, divestitures, reorganizations, and general commercial negotiations. Sophie is recognized by Chambers Canada in Corporate/Commercial – Québec a...

Seasoned litigator Marc Beauchemin is a key player on Montréal’s municipal and legal scene. As Chair of De Grandpré Chait's Board of Directors and Executive Committee, Marc Beauchemin plays a central role within the firm. His legal practice has two foci. In his first area of practice, municipal law, he represents the private interests of his clients, particularly major property owners, in the context of real estate developments throughout Québec. He and his speciali...

Suzie Lanthier is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation. Suzie, who practices law in Montréal, Quebec, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Suzie is held by other top lawyers in the same geographic and legal practice area.

André Turmel practises energy, natural resources, climate change law and works on electrification of transportation and sustainable mobility legal issues. National and international clients seek André’s extensive experience in relation to business opportunities arising out of new green technologies and renewable energies. André has in-depth knowledge of energy markets and prepares, reviews and negotiates various energy construction, supply, generation and transmissi...