
Patent infringement cases are a key focus of the intellectual property litigation team at McCarthy Tétrault, representing and advising clients across the pharmaceutical, telecommunications and oil and gas industries. Steven Mason and David Tait direct the team from Toronto; Mason has a proven track record litigating at all levels of the Canadian courts whilst Tait stands out for his work in pharmaceutical patent litigation. Daniel Glover is a reference in the market for copyright, trademarks, trade secrets and industrial design matters, and Sanjaya Mendis excels in patent disputes. James Holtom is another key member of the team, with extensive injunction, trial and appellate experience. All individuals mentioned work in Toronto.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
‘Very strong and capable lawyers at the top of their field. Excellent communicators and top notch client management skills.’
‘Steve Mason is one of the best litigators I have worked with. He is creative, understands business needs, and is very responsive.’
Key clients
- Regeneron Pharmaceuticals, Inc. / Bayer Inc.
- Allergan plc
- AbbVie
- Farmers Edge Inc.
- EMD Serono (Merck Serono)
- Eli Lilly and Company
- Bell Telephone Company of Canada, Ltd.
- Enbridge Gas Inc.
- Sam Smith, Normani, Stargate and their record label and music publishers
- Blue Wolf Capital Partners
- Rio Tinto
- Starz Entertainment, LLC
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

David Tait
Practice head
Steven Mason; David Tait
Other key lawyers
Daniel Glover; Sanjaya Mendis; James Holtom
