Skip Navigation

Marie-Hélène Constantin

Marie-Hélène Constantin
Marie-Hélène Constantin Partner | Montréal
Select Experience


  • Drafting and negotiating licensing, services and distribution agreements and other complex technology-related arrangements

  • Advising clients on technology, intellectual property and regulatory issues in the context of large technology-related corporate transactions

  • Advising retailers on e-commerce issues, including consumer protection and regulatory issues

Marketing & Advertising

  • Advising clients on marketing and advertising issues, including the review of various promotions, contest issues, online advertising and social media

  • Advising clients on language issues, including with respect to websites, signage, labelling and advertising

Life Sciences

  • Advising pharmaceutical, biotechnology and medical device manufacturers and distributors on regulatory, contractual and procurement issues


  • Reviewing privacy policies, consent forms, websites, insurance and financial services applications and other documents to identify privacy issues and drafting adequate data protection language

  • Advising clients on data transfer issues in the context of large corporate transactions (including patient information, customer information or employee information) and advising various organisations on cross-border data transfer issues

Awards & Recognition

Marie-Hélène has been recognized as a leading lawyer in several publications including recent recognitions:

  • The Best Lawyers in Canada 2024 (Health Care Law, Information Technology Law, Privacy and Data Security Law)

  • Chambers Canada: Canada’s Leading Lawyers for Business 2023 (Marketing & Advertising)

  • The Legal 500 Canada 2023 (Technology)

  • The Canadian Legal Lexpert Directory 2023 (Advertising & Marketing Law, Technology Transactions, Data Protection & Privacy, Life Sciences & Health, Computer & IT Law)

  • Who's Who Legal: Canada 2022 (Data)
Professional Activities

Marie-Hélène served on the board of directors of the Canadian IT Law Association from 2012 to 2016 and was president of the Information, Intellectual Property and Telecommunications Section of the Canadian Bar Association (Quebec Chapter) from 2007 to 2009. Marie-Hélène practises, lectures and publishes in both English and French.

She is co-chair of the Blakes Privacy group.


Admitted to the Quebec Bar – 1996
BCL, McGill University – 1995
LLB, McGill University – 1995
BMus, McGill University – 1990

More insights

Save Profile

Select sections to customize your PDF

Share this page