Firm Profile

Lax O'Sullivan Lisus Gottlieb LLP

Firm Details

Lax O’Sullivan Lisus Gottlieb LLP is a premier litigation law firm that has earned a reputation for excellence in advocacy and for innovative strategies for over 20 years, not only in successfully litigating and resolving disputes but in avoiding them as well. Our lawyers are consistently recognized for the quality of their counsel and are engaged in some of the most high-profile disputes in Canada across a range of industries. The firm provides a wide range of litigation and counsel services and has appeared before all levels of court in Ontario and Canada, administrative tribunals, regulatory tribunals, and arbitration panels. The core of the firm’s litigation practice is high profile, bet-the-company, complex civil and commercial litigation involving private and public businesses, financial institutions and regulatory bodies. The firm also practises as counsel in administrative proceedings, class actions, employment disputes, insolvency litigation, public law and constitutional issues, franchise issues, libel and slander actions, and health law litigation. The firm’s clients are based in Canada, the United States and internationally.

For further information visit


Matthew Gottlieb
Managing Partner
416 644 5353

Firm Practice Areas

  • Administrative and Public Law
  • Alternative Dispute Resolution
  • Appellate Practice
  • Class Action Litigation
  • Commercial Leasing Law
  • Commercial Litigation
  • Corporate and Commercial Litigation
  • Defamation and Media Law
  • Director and Officer Liability Practice
  • Energy Regulatory Law
  • Franchise Law
  • Health Care Law
  • Insolvency and Financial Restructuring Law
  • International Arbitration
  • Legal Malpractice Law
  • Litigation
  • Medical Negligence
  • Product Liability Law
  • Real Estate Law
  • Securities Law

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Office Locations





Toronto, ON

145 King Street West, Suite 2750

Toronto, ON M5H 1J8



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