Nadia Campion > Lax O'Sullivan Lisus Gottlieb LLP > Toronto, Canada > Lawyer Profile

Lax O'Sullivan Lisus Gottlieb LLP

Work Department

Corporate Commercial Litigation, Real Estate Litigation, Product Liability, Class Actions, Franchise Litigation, Securities Litigation


Nadia’s practice focuses on complex commercial litigation including shareholder oppression applications, D&O liability, estates matters, class actions and professional liability. Nadia also has an active land development and real estate litigation practice. She has extensive trial experience and appears regularly before the Superior Court of Justice, Ontario Court of Appeal, and various regulatory and administration tribunals. She has expertise in Toronto Commercial List proceedings and in arbitration and mediation processes. With both US and Canadian law degrees, and being fluent and practising in French, Nadia is capable of dealing with any case that comes across her desk.

Nadia has been recognized by Best Lawyers, The Canadian Legal Lexpert Directory and Chambers Canada for Commercial Litigation. She has been recognized by Benchmark Litigation as one of their Litigation Stars, as one of Canada’s Top 100 Women in Litigation, and on the 40 and Under Hot List. Nadia is an active author and speaker and regularly presents at the Law Society of Ontario, the OBA, The Advocates’ Society, the Canadian Defence Lawyers Association, the CBA, the Business Women’s Network of York Region, the International Association of Defense Counsel and l’Association des juristes d’expression française.


English, French


  • L’Association des juristes d’expression française de l’Ontario, Frequent Speaker
  • Advocates’ Society, Frequent Speaker
  • Ontario Bar Association, Executive Committee Member
  • Trial Lawyers Association, Frequent Speaker
  • Women’s White Collar Criminal Defense Association
  • LPP Trial Advocacy Program, Instructor


  • Called to the Ontario Bar, 2006
  • B.A. (with Honours), McGill University (Top 5%)
  • LL.B, University of Ottawa (Magna Cum Laude)
  • JD, Michigan State University (Summa Cum Laude)
  • Certificate in Civil Law from Universidad de Panamericana in Mexico

Lawyer Rankings

Canada > Dispute resolution: Ontario

(Next Generation Partners)

Nadia Campion – Lax O’Sullivan Lisus Gottlieb LLP

Toronto-based boutique Lax O’Sullivan Lisus Gottlieb LLP is a leading player in the Ontario disputes space. The ‘outstanding team of lawyers’ is well-versed in representing both domestic and international clients in complex commercial mandates. Practice co-head Matthew Gottlieb specializes in corporate and commercial disputes, and insolvency, fraud and securities litigation. Leading alongside him, Jonathan Lisus has focused his practice on infrastructure and P3 disputes, product liability claims and securities litigation. Additional key litigators include Crawford Smith, Andrew Winton and Shaun LaubmanNadia Campion handles shareholder oppression applications and estates matters and is lauded as ‘completely fearless’ and an ‘outstanding litigator’. Paul Fruitman is noted for his work on construction, employment health disputes, while Rahool Agarwal majors on proxy fights, director and officer liability, and complex fraud cases.