Preeminent in competition matters, Blake, Cassels & Graydon LLP is regularly sought out for advice on mergers, litigation, cartels and deceptive marketing. The team is led by Navin Joneja and Julie Soloway ; Joneja is a key contact for clients in the manufacturing, energy and tech industries, whilst Soloway is active in many high-profile Canadian and cross-border merger transactions. Kevin MacDonald is adept in handling marketing and distribution practices, abuse of dominance matters, and criminal and civil investigations. Randall Hofley in Toronto and Ottawa (private and public sectors), Cassandra Brown (foreign investment transactions) and Micah Wood (strategic alliances and mergers) are other key members of the team. At an associate level, Joe McGrade is a name to note. David Dueck left the firm in July 2024, and Fraser Malcolm was promoted to partner in January 2025. Unless noted, all lawyers mentioned work in the Toronto office.

With a particularly impressive competition and foreign investment offering, Davies Ward Phillips & Vineberg LLP act on complex mergers, and criminal and cartel and monopolization cases. The group also excels in competition class actions and compliance, and represents clients from the telecoms, aerospace and automotive industries. Anita Banicevic and John Bodrug direct the practice, representing clients in significant transactions and investigations. Sandra Forbes specializes in competition litigation, and Mark Katz is a key advisor in criminal cartel investigations and joint ventures. Elisa Kearney is equipped to handle mergers, foreign direct investment and deceptive marketing. Charles Tingley and Jim Dinning are additional key contacts in the group.

With a particularly strong merger practice, McCarthy Tétrault is sought out by clients for advice in competition clearance in addition to Competition Bureau investigations and litigation. At the helm of the practice, Jason Gudofsky negotiates remedies and orders with the Competition Bureau and before the Competition Tribunal. Oliver Borgers (mergers, acquisitions and joint ventures), Dominic Thérien in Montreal (criminal cartel, bid-rigging and civil investigations) and Debbie Salzberger (domestic and international mergers) are names to note. Having recently been promoted to partner, Gideon Kwinter is a key contact for clients in the transport, telecoms and retail sectors. At an associate level, Erin Keogh is an active member of the team. Counsel Kate McNeece and Daphné Anastassiadis left the group in 2025. Unless noted, all lawyers mentioned work in Toronto.

Active in domestic and international competition matters for clients across a variety of sectors, Stikeman Elliott LLP has a proven track record in criminal investigations, class actions and reviewable matters. Spearheading the practice from Toronto, Michael Kilby has expertise in complex merger reviews, foreign investment approvals and national security reviews. Michael Laskey works with the Competition Bureau to resolve issues and negotiate remedial agreements, and Peter Flynn advises on criminal and civil investigations and regulatory compliance. Katherine Kay (competition litigation) and senior associate David Feldman (transaction reviews and compliance) are additional names to note. Susan Hutton retired from the firm. All lawyers mentioned work in the Toronto office.

The competition team at Bennett Jones LLP  is particularly impressive in merger review and competition litigation, in addition to national security reviews. The practice is directed by US-based Melanie Aitken along with Randal Hughes in Toronto. Adam Kalbfleisch frequently advises on mergers and joint ventures clearance with the Competition Act and ICA. Litigator Emrys Davis specializes in litigating mergers, responding to criminal and civil investigations, and defending alleged anti-competitive conduct. Pascale Dionne-Bourassa is a key contact at the new Montreal office. Kyle Donnelly left the team in January.

With offices across Canada, McMillan LLP advises on high-stakes competition litigation, in addition to large mergers and transactions. Practice co-head Neil Campbell has a proven track record in cartel cases and merger clearances under the Competition Act and ICA. He leads the group alongside James Musgrove, who stands out for his work advising on class actions. Joshua Chad is another active member of the team, has a notable emphasis on cartels and price fixing defence.

The competition and antitrust team at Torys maintains a strong position in the market for competition litigation, transactions and foreign investment reviews. With strong cross-border capabilities, the group is geared to support on competition mandates for both domestic and international clients. The practice is led by 3 Toronto-based partners: Dany Assaf (transactions, investigations and reviews), Omar Wakil (mergers, cartel and abuse of dominance investigations) and Linda Plumpton (competition litigation). James Gotowiec focuses on competition litigation and class actions, and senior associate Rebecca Wagner excels in compliance matters. All lawyers mentioned work in Toronto.

With a notable emphasis on technology antitrust and competition disputes, Borden Ladner Gervais LLP is active across the retail, financial services and natural resources industries. Subrata Bhattacharjee leads the group, with established experience defending Competition Bureau investigations and disputes for global clients in the technology, media and transport sectors. Another standout member of the team is Denes Rothschild, who excels in criminal cartel matters, compliance and national security reviews. Both lawyers mentioned work in Toronto.

Fasken is a reference in the market for all aspects of Canadian competition law, including mergers and acquisitions, criminal/cartel matters, consumer protection and unilateral conduct. The team is jointly steered by Huy Do and Antonio Di Domenico; Do’s broad expertise covers merger reviews and foreign investment matters, whilst Di Domenico has notable proficiency in class actions and criminal and civil investigations. Chris Margison is a key name for clients in the transport, financial and retail industries. All individual mentioned work in Toronto.

With offices across Canada, Norton Rose Fulbright is a one-stop shop for clients nationally in competition matters. The group covers the full array of cartels, mergers and abuse of dominance. The practice is led by Chris Hersh in Toronto, who specializes in criminal competition issues, abuse of dominance and mergers and acquisitions. Eric Lefebvre in Montreal stands out for his work in contentious competition matters, and Rujuta Patel in Calgary focuses on transactions and foreign investment review matters. Erin Brown in Ottawa was promoted to partner in January 2025.

Acting for Canadian and international clients on competition matters, Baker McKenzie has strong expertise in large multi-jurisdictional mergers. Directing the practice from Toronto, Arlan Gates is a key advisor for merger control, competition investigations and pricing policies. Nancy Hamzo’s primary focus is on transactions, particularly in the life sciences and tech sectors. Brendan O’Grady was promoted to partner in January 2025. All lawyers mentioned work in Toronto.

The competition and antitrust team at Cassels Brock & Blackwell LLP has strong merger clearance and competition litigation capabilities. It is also active in foreign investment reviews, internal investigations and compliance. Davit Akman leads the team in Toronto, with broad experience covering competition litigation, mergers and cartels. Disputes fall under the remit of Lara Jackson (also in Toronto), who comfortably handles competition class actions.

Dentons is home to a well-experienced competition and antitrust team, that has a notable emphasis on merger reviews, abuse of dominance and competitor collaborations. Under the leadership of Sandy Walker and Adam S. Goodman, the group has particular depth in mergers and competition litigation. Walker excels in transactions, whilst Goodman focuses on class action and cartel defence. Both individuals work in Toronto.

DLA Piper (Canada) LLP is regularly sought out by clients for assistance in international and domestic cartel investigations, comfortably handling sensitive and high-stakes matters. The group also stands out for its work in mergers, acquisitions and civil litigation across jurisdictions. Litigator Kevin Wright co-leads the team, with broad expertise covering merger clearance, cartel matters and investigations, whilst Rebecca von Rüti and David Neave are active in competition class actions. All lawyers mentioned work in Vancouver.