Marc-André LeChasseur

Adam Barza is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate and Commercial Litigation. Adam, 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 Adam is held by other top lawyers in the same geographic and legal practice area.

Jean-François Germain is a top attorney recognized by Best Lawyers in the practice area(s) of Insurance Law. Jean-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 Jean-François is held by other top lawyers in the same geographic and legal practice area.

Frédéric Plamondon has broad litigation experience with a strong focus on white-collar defence, securities litigation and class actions. He advises corporations, public issuers and market participants in a wide range of investigations, frauds and other financial crime matters, including foreign corruption. Frédéric is regularly called upon to take part in proceedings involving various regulators and public bodies, as well as in competition and securities class acti...

Charles-Antoine Péladeau's practice covers all aspects of civil and commercial litigation, including class actions, insurance law and consumer protection law. He also practises in penal law and deals with matters relating to business ethics and anti-corruption. Since 2017, Mr. Péladeau has been an affiliate researcher at the Class Action Lab of the University of Montreal. He also taught in the civil law program at the same university.

Marie-Christine Valois is a member of the Corporate/Commercial group in the Montréal office. She practises primarily in the areas of mergers and acquisitions and other transactions involving public and private corporations, such as initial public offerings, bought deal financing and going-private transactions. In addition to transactional matters, Marie-Christine's practice focuses on general corporate governance as well as sustainability and ESG issues (environment, social, governance...

Marc-Olivier Plante is a member of our tax team. His practice encompasses all tax aspects of mergers and acquisitions, corporate financing, business reorganizations and international transactions. He also handles matters relating to estate planning and transfers of family businesses. Mr. Plante also assists a wide array of taxpayers in disputes with the tax authorities, particularly in income tax and consumer tax matters. He also advises taxpayers in connection with voluntary disclosures and ...

Imran Ahmad is a senior partner and the Canadian head of technology and Canadian co-head of cybersecurity and data privacy. He is based in our Toronto and Montreal offices and is recognized as a leading cybersecurity and privacy lawyer by several legal directories. Imran advises clients across all industries on a wide array of technology-related matters, including outsourcing, cloud computing, SaaS, strategic alliances, technology development, system procurement and implementation, technology...

Richard R. Provost is a partner in the Montréal office of Langlois Lawyers. He concentrates his practice in litigation primarily in the areas of insurance law, professional and product liability, construction law and commercial law. He has acted for clients in arbitration committees and at all trial and appellate levels. He has often been called upon to act as senior counsel in several important cases in his field of expertise and built a solid reputation, whether acting for plaintiff ...

Paul Ryan Ad. E. is a top attorney recognized by Best Lawyers in the practice area(s) of Alternative Dispute Resolution and Tax Law. Paul, who practices law in Montréal, Quebec, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Paul is held by other top lawyers in the same geographic and legal practice area.

Josée Gervais is a top attorney recognized by Best Lawyers in the practice area(s) of Labour and Employment Law. Josée, who practices law in Montréal, Quebec, has been recognized since 2022. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Josée is held by other top lawyers in the same geographic and legal practice area.