Trade Marks & Copyright 2025

CANADA Law and Practice Contributed by: Casey Chisick, Steven Kennedy, Karen MacDonald, Jessica Zagar, Dian Howard and Steven Henderson, Cassels Brock & Blackwell LLP

Karen MacDonald is a partner and registered trade mark agent at Cassels. Karen has extensive experience in litigating matters in all areas of intellectual property, including trade marks,

Dian Howard serves as counsel in the Intellectual Property Group at Cassels. She is also a registered trade mark agent. Dian’s practice covers the protection, enforcement,

patents, copyright, industrial designs, and confidential information. She has appeared before the Federal Court, the Federal Court of Appeal, the British Columbia Supreme Court, and the British Columbia Court of Appeal. Karen is also one of Canada’s leading experts in anti-counterfeiting enforcement; she is involved with developing and implementing anti-counterfeiting enforcement programmes in Canada for major brand owners worldwide. She also engages in trade mark portfolio management and Canadian and global trade mark prosecution.

acquisition and licensing of copyrights and trade marks. She advises clients on the clearance, prosecution and management of domestic and international trade mark portfolios and negotiates commercial agreements involving intellectual property rights. Dian provides clients with guidance on matters concerning copyright infringement, copyright protection and enforcement. She also advises clients on domain name and internet-related disputes, packaging and labelling requirements, marketing and advertising compliance, as well as federal and provincial privacy law and data protection matters.

Jessica Zagar is a partner at Cassels, practising in the areas of copyright, trade mark, and commercial litigation. She provides strategic direction and support to clients in the music,

Steven Henderson is an associate at Cassels. Steven’s practice focuses on all areas of intellectual property law, with an emphasis on trade marks and copyright, and includes both

literary, television, film, broadcasting and entertainment sectors in the development, exploitation, and enforcement of intellectual property. Jessica regularly represents clients in proceedings before the Copyright Board of Canada, the Ontario and Federal Courts, the Federal Court of Appeal, and the Supreme Court of Canada.

solicitor and litigation work. He has experience advising on the availability of proposed trade marks, assisting with the trade mark application process, negotiating and preparing intellectual property assignment agreements, and providing general copyright advice and recommendations. He also assists with trade mark oppositions, copyright infringement proceedings, and appellate matters.

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