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.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Lawyer & team quality
Client satisfaction: NPS ®
Testimonials
Collated independently by Legal 500 research team.
- ‘Dominic Thérien is our go-to person for all matters involving competition considerations. His vast experience working with the Bureau (as well as within the Bureau) is impressive. He quickly understands the business considerations of a transaction and provide tailor-made support. He is always available and very enjoyable to work with.’
- 'Debbie Salzberger is very personable and friendly, gives straight forward advice, is reasonable about billing for her time, and makes every effort to provide value. Niki Iatrou, with his experience on the litigation side and with the Bureau and strong judgment on strategy, we're able to go to to obtain very refined advice and specific approaches on how to manage risk on various files.'
Key clients
- Catalent
- Quikrete Companies
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Practice head
Jason Gudofsky
Other key lawyers
Oliver Borgers; Dominic Thérien; Debbie Salzberger; Gideon Kwinter; Erin Keogh; Michael Caldecott; Niki Iatrou