Lax O'Sullivan Lisus Gottlieb
Automatically compiled listing. Details may contain errors.35 lawyers · City of Toronto
One of 2,276 law firms listed in Toronto, and one of 435 handling Civil Litigation & Dispute Resolution.
About Lax O'Sullivan Lisus Gottlieb
Lax O'Sullivan Lisus Gottlieb is a Toronto law firm that works only on commercial litigation. Clifford Lax, Terrence O'Sullivan and Eleanore Cronk started the partnership in 1997, after building their careers at some of Canada's large national firms. Charles Scott joined in 2001, the same year Cronk was appointed to the Ontario Court of Appeal. Jonathan Lisus joined in 2010 to help lead the firm's next generation, and Matthew Gottlieb followed in 2011, giving the firm its current four name form. The practice has grown since then to roughly 36 litigators working from a single office in Toronto, supported by law students, law clerks and a business team.
The firm takes on class actions, restructuring and insolvency, insurance coverage disputes, securities litigation, and high net worth trust and estate disputes, along with appellate advocacy that reaches the Supreme Court of Canada. Several senior partners are Fellows of the American College of Trial Lawyers, an invitation only status open to no more than one percent of the litigation bar in each province or state. Alongside paying client work, the firm's lawyers also act pro bono in constitutional and civil liberties matters, including cases brought on behalf of the Canadian Civil Liberties Association.
Practice areas
Civil Litigation & Dispute Resolution
Bankruptcy & Insolvency
Insurance Law
Wills, Estates & Trusts
Indigenous Law
Our guide: Litigation and Dispute Resolution in Toronto
In the community
- The firm has served for five years as a Gold Sponsor of Pro Bono Ontario, supporting its work to provide access to justice.
- Lawyers act pro bono for the Canadian Civil Liberties Association, including matters that have reached the Supreme Court of Canada.
- The firm supports Young Women in Law, a not for profit that provides support to young women lawyers.
- Lawyers at the firm sit on the Board of Governors of Friends of Simon Wiesenthal Centre, and volunteer with the Divisional Court Amicus program and the Law Help Ontario Duty Counsel project.
- The firm contributes to the Canadian Civil Liberties Education Trust, which works in courtrooms, classrooms and Parliament to advance and protect civil liberties in Canada.
- Lawyers take part in the Chief Justice of Ontario's Advisory Committee on Professionalism, the Commercial List Users' Committee, and the Ontario Bar Association.
Good to know
Wheelchair accessibleLawyers 35
Alexander Mulligan
Civil Litigation & Dispute Resolution
Andrea Galizia
Andrew Gallant
Andrew Winton
Anne Posno
Annecy Pang
Civil Litigation & Dispute Resolution
Brad Vermeersch
Crawford Smith
Danielle Glatt
Civil Litigation & Dispute Resolution
Dantae Gagnier
David Endemann
Dennis Ong
Frank Gillies
Heather Taskey
Civil Litigation & Dispute Resolution
Hovsep Afarian
Jaylene Olson
Jenna D'Aurizio
Civil Litigation & Dispute Resolution
Joanna MacDonald
Civil Litigation & Dispute Resolution
John Carlo Mastrangelo
Jonathan Lisus
Partner
Madison Bell
Maggie Washington
Mahek Punjabi
Matthew Gottlieb
Partner
This firm’s lawyers at a glance
- Called to the bar
- 1992–2025 · median 7 years in practice 32 of 35 lawyers
- Law schools
- Osgoode Hall Law School (10), University of Toronto (7), University of Ottawa (4), Dalhousie University (2), University of Calgary Faculty of Law (2), University of New Brunswick (2) and 5 more 33 of 35 lawyers
- Languages on the roster
- French
Who handles what
Where to find them
Suite 2750, 145 King St W, Toronto, ON M5H 1J8, Canada · 416-598-1744
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Insurance LawThis listing was generated by AI from public sources in August 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗
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