Sébastien Roy

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.

Michaël Plante is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Michaël, who practices law in Montréal, Quebec, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michaël is held by other top lawyers in the same geographic and legal practice area.

Mtre Carignan has been working in general liability and insurance law for over 30 years. He is an experienced litigator and negotiator and holds the title of certified mediator, which is recognized by the Barreau du Québec. He acts mainly for insurers in all manner of liability disputes, and handles disciplinary matters, defending claim adjusters and brokers before various disciplinary committees. He became a certified mediator in 2019. He approaches delicate and complex disputes with ...

Kevin A. Custodio is a partner in the Corporate Group. His practice primarily focuses on domestic and cross-border mergers and acquisitions involving both public and private companies as well as private equity and venture capital. Kevin’s experience includes advising several Canadian and foreign clients in acquisitions, divestitures, reorganizations, and general commercial negotiations across industry sectors. He is a member of the Montréal office’s Students & Stagiaire...

Yannick is an expert in construction law providing advice to owners, general and specialized contractors, and suppliers of materials. He is experienced in handling claims for delays, breach of contract and the recovery of funds, particularly through the use of construction hypothecs, as well as claims for faulty work and hidden defects. He has represented various construction industry stakeholders before traditional courts and bodies offering alternative dispute resolution methods, such as ar...

Passionate about law and current events, François is a matchless speaker and negotiator. He is known for his sense of loyalty and for his availability and always demonstrates great respect for those with whom he works. Always up to date on current events, François skillfully heads big cases with a keen eye for strategy and law. His problem-solving skills and ability to find solutions help him find ways around any obstacle. François joined the firm in 1990 while he was sti...

Christopher Deehy is a partner at Lapointe Rosenstein Marchand Melançon and the leader of its Labour and Employment Law Group. He represents the firm’s corporate clients before all civil and administrative labour tribunals. He advises employers in all matters relating to employment relationships with their employees, whether they be unionized or not, including health and safety issues, collective bargaining, labour relations, sexual or psychological harassment complaints, discrim...

Raphaël represents a variety of clients, including several large companies and municipalities before courts and administrative tribunals at all levels. He has conducted several long-term trials and is thus very familiar with managing voluminous files. He is a recognized author and lecturer, particularly on issues related to abuse of process. His texts are frequently cited by the courts. He joined IMK in 2015 after practicing for 15 years with a national firm, where he developed an import...

Hélène has over 25 years of market-leading experience in advising many of Canada’s major institutions on managing complex legal and business risks, in respect of cybersecurity, information technology, privacy, and artificial intelligence. Her practice includes breach and incident response, regulatory compliance, and global data and privacy frameworks, as well as the negotiation of complex cross-border technology arrangements and transactions. Hélène excels at...

Annie Bernard's practice focuses on a broad range of complex matters, including construction and class action litigation. She represents clients in almost every sector of the construction industry ranging from owners to general contractors, subcontractors and suppliers on issues involving financing, construction defects, project management, professional liability and breach of contract. She has also developed expertise in issues relating to invitations to tender, legal hypothecs for construct...