
Demonstrating strength in Quebec, Blake, Cassels & Graydon LLP specializes in corporate litigation, product liability litigation and class actions defence. Claude Marseille leads the group, with an emphasis on class actions, product liability and shareholder remedies. Caroline Biron, Ad. E. is another notable member of the group, with experience in commercial litigation and class action defence, whilst Simon Seida remains a first port of call for professional malpractice and post-closing disputes. Matthew Liben has an interest in insurance, construction and real estate litigation, and Ariane Bisaillon handles product liability and consumer contracts. At an associate level, Anthony Cayer is a key contact. Robert Torralba has since retired Gabriel Lavery Lepage joined from Davies Ward Phillips & Vineberg LLP in May 2025.
Legal 500 Editorial commentary
Key clients
- Bell Canada Inc.
- Le Groupe Jean Coutu (PJC) Inc.
- Kraft Heinz Canada
- Air Canada
- SNC-Lavalin Group Inc.
- Dollarama
- Field Aviation
- Pharmacie Michael Assaraf Pharmacien inc.
- Repsol Oil & Gas Canada
- Elad Canada Inc.
Work highlights
Advising Bell Canada in injunctive proceedings calling on Québecor to restore the broadcast signal that Groupe TVA unlawfully interrupted during the Stanley Cup playoffs; this was the first instance in Canada of a competitor interrupting a broadcast signal, in this case affecting more than 425,000 subscribers.
Representing Field Aviation against a claim for damages brought by Bombardier for extras and delays in the delivery of a special-purpose aircraft.
Named in Canada’s first remediation agreement as Compliance Monitor for SNC-Lavalin Group Inc.
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Claude Marseille
Other key lawyers
Caroline Biron; Simon Seida; Matthew Liben; Ariane Bisaillon; Anthony Cayer




