Best Lawyers in Ontario, Canada for Intellectual Property Law
James Kosa is a partner at WeirFoulds with a practice focused on information technology and intellectual property law. James offers his clients a wealth of knowledge and experience from across the spectrum of technology issues, including the protection and exploitation of computer and software technology, IT and IP licensing, privacy, security breaches and dispute resolution. James’ depth of experience means that he is able to offer his clients clear, practical and well-rounded advice b...
Marijo Coates is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Marijo, who practices law in Toronto, Ontario, has been recognized since 2006. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Marijo is held by other top lawyers in the same geographic and legal practice area.
Kevin Sartorio is an intellectual property litigator in Gowling WLG's Toronto office. As a partner with the firm since 2007, Kevin’s expertise is extensive and covers all areas of IP contentious work, including patent, design, trademark, copyright and trade-secret litigation, as well as opposition proceedings before Canada’s Trademark Opposition Board. Kevin has appeared as counsel of record in numerous reported decisions of the Federal Court, Federal Court of Appeal, Ontario Cour...
Michel A. Chartrand is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Michel A., who practices law in Ottawa, Ontario, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michel A. is held by other top lawyers in the same geographic and legal practice area.
Marc Richard is a partner in the Gowling WLG Ottawa office, practising in the areas of patents, trademarks and copyright, with a particular focus on patent litigation. Marc has acted for clients on numerous patent matters relating to pharmaceuticals, as well as matters relating to oil and gas, electronics, food products, agriculture, mining, consumer goods and manufacturing. Marc appears regularly as an advocate before the Federal Court and has presented before the Federal Court of Appeal, th...
James Buchan is a partner located in Gowlings' Toronto office. James is a member of the firm's Board of Trustees, as well as a past leader of the firm's National Practice Group for Intellectual Property Litigation and a past co-leader of its National Trademarks Practice Group. As a barrister and solicitor, James' expertise in the IP field is broad-based and extensive, covering a wide range of IP-related contentious and non-contentious matters, including patent, trademark and copyright litigat...
Jeffrey Kang helps innovative companies create and execute IP strategies that build value and reduce risk. He also architects and builds IP portfolios, develops IP commercialization strategies, and assists in seeding and cultivating IP culture.Mr. Kang applies his legal, technical, and industry experience to help clients protect their IP by creating strategies aligned with business objectives and designing IP portfolios to target defined outcomes such as strategic partnerships, fundraising, o...
Jennifer Wilkie is a partner in Gowling WLG's Ottawa office, and an active member of the firm’s Patents, Intellectual Property Litigation & Strategy and Life Sciences groups. Jennifer has over 20 years of experience in the intellectual property field, including over 15 years as a registered patent agent. Her practice has focused primarily on patents, especially patent litigation and patent prosecution, with an emphasis on pharmaceutical and chemical patents. Jennifer regularly acts ...
Andrea Pitts is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Andrea, who practices law in Ottawa, Ontario, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrea is held by other top lawyers in the same geographic and legal practice area.
Louisa Pontrelli practises intellectual property law with an emphasis on pharmaceutical patent litigation. She has particular experience in matters affecting the innovative pharmaceutical and biotechnology industry, including infringement and validity opinions, subsequent entry biologics, infringement and impeachment actions and proceedings under the Patented Medicines (Notice of Compliance) Regulations. During her graduate studies she investigated the molecular and cellular biology of lipopr...
Constance Too is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Constance, who practices law in Ottawa, Ontario, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Constance is held by other top lawyers in the same geographic and legal practice area.
Gary's practice extends from the prosecution of trademark applications through to litigation of intellectual property rights. He appears in the courts of the Province of Ontario, as well as the Federal Court of Canada and before the Trademark Opposition Board. Gary has thirty years' experience in the intellectual property field. He advises clients in complex licensing issues and has acted as intellectual property counsel in major corporate transactions. Gary is also involved in charitable org...
Sebastian Beck-Watt is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Sebastian, who practices law in Toronto, Ontario, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Sebastian is held by other top lawyers in the same geographic and legal practice area.
Will Chalmers practices intellectual property law at Norton Rose Fulbright Canada LLP. He specializes in complex patent litigation including patent infringement and validity matters. Will has particular expertise in damages matters brought under section 8 of the Patented Medicines (Notice of Compliance) Regulations . Will’s clients span a wide variety of industries, including the life sciences, mechanical engineering and software. He has experience in matters before the Federal Court an...
Jasleen Chahal is a top attorney recognized by Best Lawyers in the practice area(s) of Intellectual Property Law. Jasleen, who practices law in Toronto, Ontario, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jasleen is held by other top lawyers in the same geographic and legal practice area.
Our Methodology
Recognition by Best Lawyers is based entirely on peer review. Our methodology is designed to capture, as accurately as possible, the consensus opinion of leading lawyers about the professional abilities of their colleagues within the same geographical area and legal practice area.
The Process
Best Lawyers employs a sophisticated, conscientious, rational, and transparent survey process designed to elicit meaningful and substantive evaluations of the quality of legal services. Our belief has always been that the quality of a peer review survey is directly related to the quality of the voters.