Acting for domestic and international clients, Lax O'Sullivan Lisus Gottlieb LLP is a litigation-focused firm based in Toronto. The team is led by Jonathan Lisus and Matthew Gottlieb, who have a proven track record in complex commercial litigation. Lisus draws on over 30 years of experience in contract disputes and professional liability. Gottlieb is particularly impressive in insolvency litigation and fraud. Other active members of the group are Crawford Smith (class actions and securities), Paul Fruitman (shareholder disputes and oppression claims), and Andrew Winton (corporate governance and real estate disputes). Rahool Agarwal, Nadia Campion, Michael Currie and John Carlo Mastrangelo are other names to note. In January 2025, Shaun Laubman left the team, whilst Philip Underwood was promoted to partner. All individuals mentioned work in Toronto.
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Practice head
Jonathan Lisus; Matthew Gottlieb
Other key lawyers
Crawford Smith; Paul Fruitman; Andrew Winton; Rahool Agarwal; Nadia Campion; Michael Currie; John Carlo Mastrangelo; Brad Vermeersch; Danielle Glatt