Margaret Weltrowska

Nick Krnjevic is a Partner in our Insurance Law Group. His practice focuses on insurance law and private international law. His insurance practice includes advising on, and litigating, insurance and reinsurance issues pertaining to primary and excess CGL, E&O, D&O, EPLI, Cyber, Property, Business Interruption and Fidelity coverage. He also acts as monitoring coverage counsel in domestic and international litigation. He also advises insurance carriers on drafting issues and provides in...

Guy Rouleau is a partner in the Business Law Group in our Montreal office. With more than two decades of experience, he advises local and international clients from various sectors on complex commercial legal issues. Guy notably supports companies doing business in Quebec in matters related to mergers and acquisitions, the sale and distribution of products, and transactions involving intellectual capital. In particular, Guy has significant experience working with clients in the information te...

Erik P. Masse is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation and Product Liability Law. Erik P., 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 Erik P. is held by other top lawyers in the same geographic and legal practice area.

Sébastien Gardère is a top attorney recognized by Best Lawyers in the practice area(s) of Advertising and Marketing Law and Intellectual Property Law. Sébastien, 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 Sébastien is held by other top lawyers in the same geographic and legal practice area.

Stefan Chripounoff is a commercial litigation partner at the Montréal office of Langlois. His practice focuses on commercial litigation and on restructuring & insolvency. The current chair of the firm’s arbitration and ADR group, he acts in a significant number of large-scale files before all levels of the courts and arbitration tribunals. He also practices energy law and, over the past twenty years, he advised his clients on their natural gas purchase and sale contracts and ...

Jean-Philippe Therriault is a member of the firm’s Environmental, Energy and Climate Change group. His practice focuses on environmental, construction and public procurement law. In environmental law, Jean-Philippe advises clients on compliance issues and helps them navigate the permit and approval process. He has extensive experience in commercial and real estate transactions involving environmental issues, including the management of risks associated with release of contaminants, cont...

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...

Robert is a partner of the firm and heads its Tax department and Wills, Trusts and Estates department. He received both his Bachelor of Civil Law and Common Law from McGill University in 1989 and later completed a Graduate Diploma in Taxation at McGill University. Robert practices in the area of tax with a focus on income tax planning for Canadian private corporations and their owners, corporate reorganizations and tax dispute resolution. Robert is regularly involved in estate and succession ...

Pascal Lauzon is one of Quebec’s leading specialists in intellectual property litigation. He acts quickly and efficiently to either prevent infringement of intellectual property rights or defend a business accused, wrongly or not, of violating the intellectual property rights of a third party. Pascal's practice focuses on trademarks and patents as well as on copyright, industrial design and trade secret issues. A mediator certified by the Barreau du Québec, he helps businesses fi...

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 ...