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Lax O'Sullivan Lisus Gottlieb LLP

Litigation: General Commercial

5 ranked lawyersBand 1OntarioCanada 2022 View ranking table
chambers review
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Ranked Lawyers
chambers review
department information
Ranked Lawyers

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What the team is known for

Lax O'Sullivan Lisus Gottlieb is a Toronto litigation boutique that is sought out for its handling of high-end corporate and commercial litigation. The firm's areas of expertise include contractual and shareholder disputes, professional liability and insolvency, as well as matters involving franchising and construction law. The team is highly experienced at both trial and appellate level, and regularly handles class action work, acting for both plaintiffs and defendants. It acts for an impressive range of clients, including domestic and international companies and financial institutions, as well as corporate directors and officers, and is often sought out as counsel by other law firms.


"Lax O'Sullivan Lisus Gottlieb is top of the class," hailed one client, adding: "Their team will never be outmanoeuvred."

Others comment: "It is a very highly regarded team, one that can handle the most complex litigation matters."

Work highlights

A LOLG team led by Jonathan Lisus and Rahool Agarwal represented Zydus Pharmaceuticals in a high-profile class action against multiple generic drug manufacturers, alleging anti-competitive behaviour and price fixing.

Notable practitioners

Crawford Smith is a highly regarded lawyer with a diverse commercial litigation practice. He earns plaudits for his counsel on single-plaintiff and class action disputes, with notable experience in the energy sector. He is based in Toronto.
"He has a tremendous ability to understand, phrase and synthesise complex facts and legal arguments." "Crawford Smith is a fabulous lawyer."

Jonathan Lisus is an eminent commercial litigator in Toronto who features on some of the country's largest mandates, touching on such issues as negligent misrepresentation, breach of contract and unfair conduct, as well as shareholder disputes. 
"Jonathan Lisus is in a class of his own. He is one of the best litigators in Canada." "He really is brilliant; he is incredibly hard-working, diligent and able to deal with legal issues in a creative way."

Managing partner Matthew Gottlieb is a prominent figure in Toronto's commercial litigation market. He is particularly respected for his insolvency disputes practice.
"He has a well-deserved reputation for his advocacy skills." "Matthew Gottlieb is an excellent lawyer."

Nadia Campion has wide-ranging commercial experience, including advising on insolvency-related cases and class actions, as well as novel issues relating to the destruction of human biological reproductive materials. She works out of Toronto.
"Nadia Campion is an excellent litigator."

Toronto-based Paul Michell is a seasoned lawyer with a well-established reputation in the commercial litigation field. He is additionally instructed on arbitration matters.

Department Information

This content is provided by Lax O'Sullivan Lisus Gottlieb LLP.


Lax O’Sullivan Lisus Gottlieb (LOLG) is Canada’s premier counsel firm. The firm’s lawyers handle the most complex commercial disputes and public law cases. They carry a robust trial, arbitration and appellate practice across the country and in the Supreme Court of Canada.

LOLG is regularly engaged as trial and appellate co-counsel by peer law firms, and as court officers in large and sensitive litigation mandates. The firm also acts as counsel in class actions, securities litigation and administrative law matters, as well as infrastructure, franchise, employment and health law disputes.

LOLG also has one of Canada’s leading restructuring & insolvency practices. The firm’s insolvency counsel are ranked among the top nationally and have material roles in Canada’s largest and most complex insolvency proceedings and restructurings.

LOLG’s practitioners are leaders at the bar, holding positions on the Chief Justice of Ontario’s Advisory Committee on Professionalism and the Supreme Court Advocacy Institute, and fellowships in elite trial organizations. Its associates are of the highest caliber, recruited primarily from judicial clerkships at the Supreme Court of Canada, provincial Courts of Appeal and the Commercial List of the Ontario Superior Court of Justice. LOLG's partners are among the most consistently recommended counsel in Canada and represent clients in Canada, the United States, and from overseas.

Litigation: General Commercial

Lax O'Sullivan Lisus Gottlieb LLP


145 King Street West

Suite 2750




M5H 1J8

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Ranked Lawyers

Chambers Research is conducted by 200 Research Analysts, across 200 jurisdictions and provides nearly 6,000 rankings tables. Annually we collect hundreds of thousands of responses from clients, the majority via in-depth interview. Learn more about our methodology.


Litigation: General Commercial

Crawford G Smith
Band 3
Jonathan C Lisus
Band 1
Matthew P Gottlieb
Band 2
Nadia Campion
Up and Coming
Paul Michell
Band 5