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
LAWYER, REGISTERED TRADEMARK AGENT
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

Federal court confirms copyright can subsist in a curated list of third-party links
Can a list of hyperlinks to someone else’s content enjoy copyright protection? According to the Federal Court, it can. In Rayman v. Red Crayon Inc., 2026 FC 951, the Court held that copyright may subsist in the original selection and listing of hyperlinks to third-party materials and that significant damages can be awarded for unauthorized…

ASIALICIOUS: Who Comes to Mind?
Foodies in the Greater Toronto Area (GTA) may be aware of the Asialicious Carnival, an annual community celebration of Asian culture and cuisine that started in 2019 and is currently getting ready for its eighth year. What many may not have been aware of is that, for five of those years, the carnival’s iconic name,…

Intellectual property protection for AI prompts
As businesses increasingly use artificial intelligence (“AI”) in their internal operations and product offerings, they are relying more on carefully engineered instructions or “prompts” to improve the AI’s performance and output. These prompts can constitute valuable intellectual property (“IP”) and are protectable as trade secrets or works of copyright. Businesses should treat them as such.…
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