November 6th, 2025

Affleck Greene McMurtry LLP is pleased to announce that senior counsel John F. Rook, KC and partner David Vaillancourt have been recognized for competition law thought leadership as Mondaq Thought Leading Co-Authors for Antitrust/Competition Law, Canada in the Autumn 2025 awards.

This competition law thought leadership recognition follows their co-authorship of “Understanding The Chilling Effect On Mergers And Market Share,” which attracted significant readership over the previous six months. Consequently, both authors received this distinguished honour based on the article’s impact within the legal and business community.

Released twice yearly, Mondaq’s awards showcase competition law thought leadership by recognizing top authors and co-authors based on total readership. These awards highlight contributors whose insights and analysis resonate most strongly across multiple jurisdictions and practice areas.

John F. Rook, KC brings over 50 years of competition law and commercial litigation experience to his role as senior counsel at Affleck Greene McMurtry. His work on merger matters, regulatory proceedings, and competitive conduct issues has made him a recognized authority in Canadian competition law thought leadership.

David Vaillancourt focuses on providing practical guidance to clients navigating complex antitrust matters, including merger reviews, Competition Bureau investigations, and private enforcement proceedings. His strategic approach and competition law thought leadership help businesses understand and comply with Canada’s evolving regulatory landscape.

At Affleck Greene McMurtry, our competition law practice continues to deliver strategic advice and effective advocacy on the full spectrum of competition and antitrust matters. Our commitment to competition law thought leadership ensures clients receive cutting-edge insights and analysis. To learn more about our services and recent developments in the field, please visit The Litigator.

We congratulate John and David on this well-deserved recognition and their continued competition law thought leadership contributions in Canada.