Lax O'Sullivan Lisus Gottlieb LLP

Corporate Commercial Litigation, Infrastructure-related Litigation, Product Liabiliy, Class Actions, Oppression Remedies, Franchise Litigation, Securities Litigation

Jonathan’s practice focuses on commercial and public law trial and appellate litigation. He has deep experience with infrastructure and P3-related litigation, class actions for plaintiffs and defendants, product liability, aboriginal land claims, oppression remedies, and securities litigation. He appears as counsel in courts and arbitral tribunals across the country and the Supreme Court of Canada.

Jonathan regularly appears as Special Counsel to the Canadian Civil Liberties Association in challenges to government action. He is a Fellow of the American College of Trial Lawyers, the International Academy of Trial Lawyers, a member of the Chief Justice of Ontario’s Advisory Committee on Professionalism, and a member of the Supreme Court Advocacy Institute, a select group of appointed advocates who provide pro bono peer review to counsel appearing in the Supreme Court of Canada. He maintains an active trial and appellate practice across Canada.

Described by his peers as ‘the gold standard in this space, a phenomenal litigator’, for more than 30 years Jonathan has won landmark decisions across a broad variety of subject matter including competition law, constitutional law, liability of public authorities, professional liability, criminal law, financial services, franchise law and contract disputes. He has tried over 90 cases to judgment and argued over 55 appeals in provincial appellate courts and the Supreme Court of Canada.

Chief Justice of Ontario Advisory Committee on Professionalism, Member Supreme Court Advocacy Institute, Member Canadian Civil Liberties Association, Board of Directors and Executive Committee American College of Trial Lawyers, Fellow International Academy of Trial Lawyers, Board of Directors and Admissions Committee North York General Hospital Foundation, Board of Governors Lawyers International Food Enterprise, co-founder and director

Called to the Ontario Bar, 1992 LL.B., Osgoode Hall Law School