Justine Johnston

Practice Areas

Justine advises clients on all aspects of Canadian competition law, with a particular focus on obtaining competition clearance in domestic, cross-border and multi-jurisdictional transactions. She also provides strategic advice to clients regarding criminal and civil investigations, including for allegations of conspiracy and abuse of dominance, and other compliance matters.

Justine regularly advises clients on the application of the Investment Canada Act, and has recent experience guiding clients through industrial, cultural and national security processes and reviews. In addition, she has significant experience working with government and public relations advisors in connection with securing regulatory approvals for high-profile transactions.

Justine also has extensive experience with e-discovery processes related to merger review, criminal and civil investigations, and internal compliance. Justine draws on her experience to facilitate client’s compliance in a timely and efficient manner.

Professional Memberships

Law Society of Ontario

Canadian Bar Association (Competition Law and Foreign Investment Review, Vice Chair of the Reviewable Matters and Unilateral Conduct Committee)

Ontario Bar Association

American Bar Association (Section of Antitrust Law)

Publications

Author, Competition in Digital Markets, Canada chapter, Lexology Panoramic 2025

Author, Dominance and Monopolies, Canada chapter, Lexology In-Depth, 12th Ed

Author, "Canada: Abuse of dominance takes center stage in the latest round of amendments to the Competition Act," InsightPlus, February 2024

Author, "Canada: Proposed Competition Act amendments will create new but uncertain form of class proceeding," InsightPlus, February 2024

Author, "Canada: Merger review developments for 2024," InsightPlus, January 2024

Expert in these Jurisdictions

Canada

Languages Spoken

English

Education