Steven Mason > McCarthy Tétrault > Toronto, Canada > Lawyer Profile

McCarthy Tétrault
66 Wellington Street West
Suite 5300, TD Bank Tower Box 48
Toronto ON M5K 1E6

Work Department

Intellectual Property: Litigation; Life Sciences: IP/Patent Litigation


Chair of the firm’s National Intellectual Property Litigation Group. Acted as lead trial and appellate counsel in a broad range of IP cases in Ontario, British Columbia, in the Federal Courts and in the Supreme Court of Canada. Also practised IP Litigation in the United States (Cal.). Adjunct Professor at Osgoode Hall Faculty of Law; teaches Intellectual Property Law.


Ontario Bar, 1994; State Bar of California, 2001.


Fellow, Litigation Counsel of America.

Lawyer Rankings

Canada > Intellectual property

(Leading individuals)

Steven MasonMcCarthy Tétrault

Contentious matters are the standout forte for McCarthy Tétrault‘s practice which operates across all subsets of IP, providing representation before all levels of domestic courts in addition to international tribunals. Steven Mason has a number of high-profile victories at the Supreme Court of Canada under his belt, directing particular emphasis towards patent disputes, meanwhile Alfred Macchione oversees the prosecution and business IP practice and is often instructed by start-ups in the technology sector. Lisa Melanson heads the firm’s IP strategy initiative, managing global IP portfolios and leveraging her qualification at the New York Bar to support on cross-border mandates involving the US. Senior counsel Barry Sookman is a distinguished name in the field of copyright law whereas disputes experts Daniel Glover and Fiona Legere provide the group with a wealth of sector-specific expertise in fields such as retail, entertainment, technology, media, pharmaceutical and telecommunications. Named lawyers are based in Toronto with Vancouver-based Vincent Yip leading the firm’s Western Canadian IP practice.

Canada > Telecoms

Standing out for its stellar track record in litigation, McCarthy Tétrault provides support to a myriad of telecoms and broadcasting clients in relation to regulatory issues, business transactions, commercial agreements and licensing matters. The team, whose service offering also covers representation before the CRTC, is instructed by Canadian and international industry players, including satellite carriers, internet service providers, wireless networks, private equity investors, financial institutions and governments. The Toronto-based practice is led by renowned Grant Buchanan, who brings together expertise in regulatory matters, telecom financing and Copyright Board work. He receives key support from a team of specialist lawyers, which includes IP litigator Steven Mason and Brandon Kain, the latter of whom leads on appellate cases. Keith Rose is also noteworthy for his work with innovative new technologies in the 5G, Wi-Fi systems, connected vehicles and Internet of Things space.