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Antonio Di Domenico Toronto Lawyer

Antonio Di Domenico *

Partner | Co-leader, Antitrust / Competition & Marketing Fasken
Competition enforcement – both by the Competition Bureau and private actors through class actions - has intensified, requiring multi-faceted strategies to avoid challenges and to defend when necessary.
Jurisdiction Ontario, 2006
Language(s) English, Italian
Office(s) Toronto
*practising through a professional corporation

Tony is a Partner and Co-Leader of the firm’s Antitrust/Competition & Marketing Group. As former counsel to Canada’s Commissioner of Competition (Department of Justice Canada) and having served as counsel in many of Canada’s most significant competition matters, Tony is widely recognized as one of Canada’s leading practitioners in competition law and litigation.

Tony represents and counsels clients in domestic and multi-jurisdictional competition matters, including mergers, criminal cartel matters, advertising and marketing practices, abuse of dominance and other reviewable practices. Tony represents parties in criminal and civil investigations, litigated proceedings before Canada’s Competition Tribunal and class action litigation. Tony has extensive trial and appellate experience, having appeared as counsel before Canada’s Competition Tribunal, all levels of court in Ontario, the Federal Court of Canada, the Federal Court of Appeal and the Supreme Court of Canada.

While with the Department of Justice (2014-2016), Tony directly advised the Commissioner of many of the Competition Bureau’s high-profile cases. In this role, Tony represented the Commissioner in complaints and investigations, enforcement matters, the review of mergers, major litigated proceedings and the negotiation of remedies and orders. Tony also secured numerous production orders/subpoenas on behalf of the Commissioner and advised on Competition Bureau enforcement guidelines and competition policy matters.

Tony is the author of the leading legal treatise, Competition Enforcement and Litigation in Canada (Emond Publishing). Tony is an adjunct law professor at Osgoode Hall Law School in Toronto, where he teaches competition law and trial advocacy. Tony is a non-governmental adviser to the International Competition Network, a network of the world's competition authorities that promotes effective global antitrust enforcement. Tony is active in the leadership of the Canadian Bar Association’s National Competition Law Section, having served as Chair of the Criminal Matters Committee and currently serving as a Vice-Chair of the Mergers Committee. Tony is also active in the leadership of the American Bar Association’s Section of Antitrust Law, currently serving as a Vice-Chair of the Consumer Protection Committee. Tony is a past chair of the Ontario Bar Association’s Class Action Section and currently sits on the Bench and Bar Class Action Liaison Committee in the Province of Ontario.

Tony’s community work includes serving on the board of directors of York University, the Italian Chamber of Commerce of Ontario and the Hockey Association for the Developmentally Challenged.

Date Client


  • LLB Osgoode Hall Law School at York University
  • BA, (Hons) Summa Cum Laude York University

Community involvement

  • Vice-Chair, York University Alumni Association Board of Directors
    • Chair, Awards Committee
  • Board Member, Hockey Association for the Developmentally Challenged
  • Director, Osgoode Hall Law School Alumni Association Board of Directors (past) 
    • Co-Chair, Awards Committee 
  • Chair, Osgoode Hall Law School Mentorship Program (past)
  • Governor, York University (past)
  • Senator, York University Senate (past) 
  • Small Claims Pro Bono Counsel Project, Pro Bono Law Ontario (past)

Memberships & Affiliations

  • Canadian Bar Association, National Competition Law Section
    • Chair, Criminal Matters Committee
    • Member, Competition Litigation, Mergers, Reviewable Matters/Unilateral and Marketing Practices Committees
  • American Bar Association, Section of Antitrust Law 
    • Vice-Chair, Consumer Protection Committee
    • Editor, Consumer Protection Committee's International Consumer Development Updates
    • Member, Cartel and Criminal Practice Committee
    • Co-Chair, American Bar Association Criminal Justice Section Regional Sub-Committee (Canada) on White Collar Crime
  • Ontario Bar Association
    • Vice-Chair, Class Action Section
    • Member, Civil Litigation Section
  • The Advocates' Society
    • Chair, Young Advocates' Standing Committee (past)
    • Co-Chair, Class Actions Practice Group (past)
    • Member, Board Standing Committees (Education and Operations, Governance and Finance Committees) (past)
    • Task Forces (Paperless Trials Manuals, Communications with Testifying Experts)
    • Co-Chair, Fall Forum 2012 Conference (past)
  • Adjunct Professor, Osgoode Hall Law School/Osgoode Professional Development
    • Lawyer As Negotiator (course focused on dispute resolution and negotiation theory and practice)
    • Intensive Trial Advocacy Workshop (intensive trial advocacy course for lawyers)
  • Defence Research Institute
  • Toronto Lawyers' Association
  • Italian Chamber of Commerce of Ontario
    • Chair, under-40 Division (past)
  • Canadian Italian Advocates Organization 
    • Director, Board of Directors (past)
Speaker Competition and Deceptive Marketing Enforcement in the Digital World Toronto Symposium (9th Edition) location location Toronto, ON
CASL: Time to get Serious about Compliance location location Toronto
Advertising Bargains: Is the Price Right? 2017 Spring Meeting, American Bar Association Section of Antitrust Law location location Washington


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