Gérald R. Tremblay KC, Ad.E.

Pierre-Olivier Tremblay is a member of the Corporate/Commercial group at the Montréal office. His practice is focused on commercial transactions in the area of infrastructure, transportation, and project financing. He also works in factoring, corporate finance, and structured finance. Pierre-Olivier has significant experience with clients in various sectors, including infrastructure and public-private partnerships (P3), transport, and financial institutions. He holds a master of busine...

Louis Tassé is a top attorney recognized by Best Lawyers in the practice area(s) of Tax Law. Louis, who practices law in Montréal, Quebec, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Louis is held by other top lawyers in the same geographic and legal practice area.

Practice focuses on strategic alliances, joint ventures and mergers and acquisitions of private corporations and investment funds. In the fields of technology and computer law, expertise includes drafting computer software development agreements, licensing agreements, distribution agreements, computer and telecommunication system outsourcing agreements and electronic commerce agreements. Major files have included outsourcing computer and telecommunication systems, joint ventures, high density...

Quentin Lageix is a partner in the Tax group. His practice encompasses all aspects of tax law. More specifically, Quentin advises clients on transactional taxation, international taxation and tax planning matters. Quentin participates in developing and implementing complex tax strategies. His practice focuses on domestic and cross-border corporate restructurings, reorganizations, mergers and acquisitions.

Antoine Guilmain is a partner in Gowling WLG's Montréal office where he co-leads the firm's national Cyber Security and Data Protection Law Group. He holds two PhD's in Information Technology Law from the University of Paris 1 Panthéon-Sorbonne and the University of Montréal. He has published multiple monographs and articles, frequently gives conferences, and teaches at several universities.

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

Daniel Picotte joined the firm in 1978 and has been a partner since 1986. His busy practice is centred on business law and has allowed him to develop cutting-edge expertise in the areas of transactions, restructurings and major investments in public or industrial infrastructure, in addition to offering clients seasoned counsel in Canadian and international markets. In 2020, he joined the firm’s senior management as Chief Legal Officer and General Counsel. In this role, he is primarily r...

Peter E. Kirby provides counsel on all aspects of cross-border trade. He advises on regulatory compliance, trade agreements, and trade remedies such as anti-dumping and countervailing duty actions. His practice extends to international commercial arbitration and investor-state arbitration, customs law, and export and import controls. Appearing before governmental and administrative agencies and the Federal Court, Peter also represents clients in appellate litigation relating to trade and cust...

Marc Leiter’s experience, expertise and solution-solving acumen are the keys to a successful commercial transaction. With over three decades of business law experience, Marc Leiter steers businesses through all stages of a commercial transaction. Well-versed in the challenges faced by businesspeople, he dispenses sound advice on mergers and acquisitions (both domestic and cross-border), contracts and licenses, and other transactions. A prominent figure in the world of business law, Marc...

Jean Fontaine is a partner and member of the Litigation & Dispute Resolution and Restructuring & Insolvency Groups. His practice focuses principally on the areas of restructuring & insolvency, and shareholders disputes. Jean has been involved in numerous cases where he either acted for the Defense or for the Plaintiff. Among other clients, he represents financial institutions, trustees and public companies. He is a member of the Montréal office’s Management Committee....