Sean Griffin
Awarded Practice Areas
Biography
Sean Griffin is a partner in the litigation group in Langlois lawyers’ Montréal office and a member of the firm’s Board of Directors.
His practice focuses on complex litigation involving constitutional, administrative and commercial law issues, as well as corporate and securities matters. With recognized expertise in defending public and private corporations, financial institutions and various entities active in the financial markets, including their directors and officers, Sean represents his clientele in a wide variety of civil and statutory proceedings, including class actions and regulatory investigations.
He also acts as strategic advisor to a number of clients on issues involving governance and regulatory compliance.
Sean appears before all levels of the courts, and also represents his clients in the context of regulatory investigations undertaken by authorities such as the Investment Industry Regulatory Organization of Canada (IIROC) and Quebec’s Autorité des marchés financiers (AMF).
A sought-after conference speaker, Sean frequently gives presentations on current issues involving commercial litigation, managing complex litigation files and litigation risk, governance, class actions and regulatory and internal investigations.
Overview
- Quebec, Barreau du Quebec, 2007
- Quebec, Barreau du Quebec, 2007
Client Testimonials
Awards & Focus

- Appellate Practice, Montréal, Canada (2026)
- Administrative and Public Law
- Appellate Practice
- Banking and Finance Law
- Class Action Litigation
- Corporate and Commercial Litigation
News & Media
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