Matthias Heilke

Derek Chiasson is a partner in our tax team. His principal focus is on domestic and international tax aspects of mergers and acquisitions, corporate finance and corporate reorganizations, for public and private corporations. He also regularly advises on tax disputes, commodity taxes and executive compensation. Derek leverages his broad experience to bridge tax, finance and legal aspects of the transactions and reorganizations he works on, while maintaining strong technical skills, attention t...

Pierre Dozois is a top attorney recognized by Best Lawyers in the practice area(s) of Mergers and Acquisitions Law. Pierre, 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 Pierre is held by other top lawyers in the same geographic and legal practice area.

Jean-Philippe Joyal is a partner in the firm’s Investment Funds Group. Jean-Philippe focuses his practice on advising managers on all aspects of their business including the structuring, formation, marketing and management of investment funds, the launching of new business lines, GP-led secondaries, strategic investments and transactions and regulatory issues. Jean-Philippe has represented numerous managers in establishing open-end and closed funds, fund-of-funds structure, special purp...

Jean-Pierre Sheppard is a Partner and Head of the Commercial Litigation Group. His practice focuses in shareholder and partner disputes. He represents private businesses and public institutions in cases of breach of contractual, legal and statutory obligations of shareholders, directors and officers. He has been involved in numerous unfair competition cases, as well as matters involving non-competition and non-solicitation clauses and misappropriation of confidential information. He has plead...

The Honourable François Rolland, Ad. E. is senior counsel, mediator and arbitrator in Langlois lawyers’ litigation group in Montréal. Mr. Rolland was a Justice of the Superior Court of Québec from 1996 to 2015, and Chief Justice from 2004 to 2015. He presided numerous trials in all areas of the law, including commercial law, class actions, insolvency and corporate reorganizations, as well as matrimonial disputes. He also presided many settlement conferences in civil...

Stéphanie Pépin is a partner in the tax group of our Montréal office, focusing on tax planning and tax litigation. Stéphanie is recognized for her understanding of the business environment and her in-depth knowledge of complex tax issues. She advises both individuals and companies on structuring their affairs in a constantly evolving legal environment, with a focus on tax optimization and compliance with current laws. Her analytical and strategic approach enables h...

Martin Thériault practises corporate financing, financial services and general banking law. He regularly acts as counsel for lending syndicates, individual lenders and borrowers in the context of various types of Canadian, cross-border and foreign financing transactions in a variety of industries, including project financings, structured finance, real estate financings, public and private takeover bids and acquisition financings. He is actively involved in negotiating and coordinating ...

Neil Wiener practices securities law with an emphasis on financing and mergers & acquisitions. He advises on a broad range of securities law matters, including public offerings, private placements, stock exchange listings, take-over bids, going-private transactions, reverse take-overs and shareholder proxy fights. Neil acts as lead counsel in equity and debt offerings for both issuers and dealers and in M&A transactions. In addition to his work in financing and mergers & acquisiti...

Jean-François Vadeboncoeur is a top attorney recognized by Best Lawyers in the practice area(s) of Asset-Based Lending Practice and Banking and Finance Law. Jean-François, 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 Jean-François is held by other top lawyers in the same geographic and legal practice area.

Jean-François Gagnon is the Chief Executive Officer of Langlois Lawyers. He is also a member of the firm’s Executive Committee and Board of Directors. His practice focuses on complex commercial litigation, corporate governance, strategy, crisis management, ethics and deontology. He has wide-ranging experience in matters involving directors’ and officers’ liability, the management of not-for-profit organizations, construction law and insurance law. Jean-François...