Acted for the successful appellant in this appeal from an interlocutory injunction order in a trademark infringement and passing off action in the Ontario Superior Court. Three Divisional Court judges unanimously agreed that the Superior Court had erred in each element of the three-part test, including in finding that the plaintiff had established a serious issue to be tried. You can read more about the case in this article about it.

Rebecca Kupfer
About Rebecca Kupfer
Licensed to practice in both Canada and the United States, Rebecca specializes in Canadian and U.S. trademark prosecution and Canadian trademark and copyright disputes. Rebecca’s practice is focused on helping her clients protect their brands in both countries and navigate the intricacies of both the Canadian and U.S. trademark systems.
Rebecca is a graduate of the Canadian and American Dual JD program through the universities of Windsor and Detroit Mercy. Prior to law school Rebecca obtained an Honours Bachelor of Arts degree in Philosophy from Queen’s University.
At law school, Rebecca was active in student and community life as an executive member of the Jewish Law Students Association, as a Faculty Council Representative on Windsor’s Student Law Society and volunteering with Windsor Community Legal Aid. She also served as a Teaching Assistant for the Comparative Legal Writing and Research course at Detroit Mercy Law. After her first year, Rebecca completed a Judicial Internship with the Honourable Terrence G. Berg in the United States District Court for the Eastern District of Michigan.
Prior to joining Shift Law as an Associate, Rebecca summered and articled at another boutique intellectual property firm in downtown Toronto.
Rebecca is admitted to the Bars of Ontario and Minnesota.
Client Work
Insights
Protecting Trade Secrets in Canada: Understanding the Current Legal Framework
The Globe and Mail published an article recently calling for Canada to adopt trade secret legislation to provide clear, consistent, and enforceable protection for trade secrets and confidential information across the country. The article…
When Trademarks Fall to Pieces: EUIPO Invalidates Rubik’s Cube Design Trademark
Following a recent decision by the European Union Intellectual Property Office (EUIPO) to invalidate Spin Master’s Rubik’s Cube trademark in the EU, we explore what this means for three-dimensional trademarks in Canada….
Federal Court clarifies the evidentiary burden to satisfy the Bojangles test in trademark oppositions
In 2718971 Ontario Inc. v. Kinde Company Ltd., 2025 FC 1114, the Federal Court considered an appeal from a decision of the Trademarks Opposition Board (the “TMOB”) where the opponent’s primary ground…
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