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McMillan LLP


5 ranked lawyersBand 2Nationwide - CanadaCanada 2022 View ranking table
chambers review
department information
Ranked Lawyers
chambers review
department information
Ranked Lawyers

Chambers Review

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.

What the team is known for

McMillan operates a well-known competition and antitrust practice that is widely recognised for its significant experience of cartel investigations and class actions with additional strength in price-fixing cases and misleading advertising matters. The firm has a solid track record advising on merger and foreign investment review files, often acting for multinational clients on mandates in the cannabis and technology sectors, among others. Clients benefit from the broad spread of McMillan's experts across Canada, with lawyers based in Toronto, Ottawa, Vancouver and Montréal.


"The whole process was handled quite efficiently," recalled one source, adding: "It was a terrific experience, and the client was well served by McMillan's coordination in particular."

Work highlights

A McMillan team led by Vancouver-based François Tougas advised West Fraser Timber on the regulatory aspects of its CAD4 billion acquisition of Norbord.

Notable practitioners

David Kent is an established Toronto-based competition litigator with a solid track record acting for clients on significant class actions and regulatory enforcement files. His experience includes playing a key role in prominent antitrust disputes in the automotive industry.

Ottawa and Montréal-based Guy Pinsonnault is an experienced lawyer who wins particular recognition for his expertise in commercial crime and international cartel matters. He is a former senior prosecutor at the Competition Bureau.
"Guy Pinsonnault remains an absolute go-to for matters concerning competition and antitrust, as well as white-collar defence and fraud investigations. His in-depth knowledge of these issues and his experience greatly assists clients in moments of crisis." "His balance of very sound advocacy skills and knowledge of the Bureau makes him a unique resource."

James Musgrove is a well-established and highly respected competition lawyer with notable expertise in the area of misleading advertising and marketing regulations. He is based in Toronto.
"He knows the law, exercises sound judgement, avoids equivocation and interacts well with clients." "James Musgrove is always responsive, provides clear and practical advice, and is a pleasure to work with."

Mark Opashinov provides guidance to clients on the regulatory clearance of significant mergers and investments. He also has experience in regulatory enforcement files. He is based in Toronto.

Toronto-based Neil Campbell is a household name in the Canadian competition and foreign investment market, notably playing leading roles in a range of major regulatory investigations and enforcement proceedings.
"It was a very pleasant experience working with Neil Campbell. He provided quick responses and was very supportive." "He is a terrific lawyer and fully deserving of his market-leading reputation."

Department Information

This content is provided by McMillan LLP.


McMillan offers a unique national platform for its competition law practice with senior group members practicing in Toronto, Vancouver, Ottawa and Montréal. With the rapid growth of cross-country class-action litigation in Canada, this broad bench strength provides our clients with a meaningful advantage. McMillan’s competition practice was selected as one of five finalists at the 2017 Chambers Canada Awards for “Competition Team of the Year”. We have been nominated for this award each year since its inception. The Co-Chair of our practice, Neil Campbell, was honoured at the 2016 Global Competition Review Awards as the “Dealmaker of the Year”. Neil is the only Canadian lawyer to have ever won this major GCR award. Five other members of the group are also GCR award winners. Our leading profile in the competition law practice is reflected in our position within the American Bar Association’s Antitrust Section, where we have the most lawyers appointed to leadership positions of any Canadian — or indeed, any non-American — law firm. The global Auto Parts inquiry has been the most significant and the largest competition law investigation worldwide for the last 7 years. We have been retained to defend more than 30 different actions in the various Auto Parts class actions — the most of any Canadian law firm. We have also played central roles in most of the other major competition class actions in Canada including credit cards, optical disk drives, and car carriers.


McMillan LLP


Brookfield Place

181 Bay Street

Suite 4400




ON M5J 2T3

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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.

Nationwide - Canada


James Musgrove
Band 2
Mark Opashinov
Band 5
Neil Campbell
Band 1

Competition/Antitrust: Litigators

David W Kent
Band 2
Guy Pinsonnault
Band 4