In CanMar Foods Ltd. v TA Foods Ltd., 2019 FC 1233, the Federal Court interpreted and applied the new file wrapper estoppel provision, section 53.1 of the Patent Act, RSC 1985, c P-4, for the first time. While CanMar is not a life sciences case, the application of Canada's new file wrapper estoppel provision has implications for patentees generally.
In CanMar, the patentee contended that two elements of the claim at issue were non-essential. The Court reached the opposite conclusion by relying on prosecution history evidence admitted under section 53.1, and set out a test for the circumstances under which the Court will admit evidence from a foreign file wrapper under this provision. For a more detailed analysis of the Court's analysis and findings, be sure to read our IP Monitor publication.
About Norton Rose Fulbright Canada LLP
Norton Rose Fulbright is a global law firm. We provide the world's preeminent corporations and financial institutions with a full business law service. We have 3800 lawyers and other legal staff based in more than 50 cities across Europe, the United States, Canada, Latin America, Asia, Australia, Africa, the Middle East and Central Asia.
Recognized for our industry focus, we are strong across all the key industry sectors: financial institutions; energy; infrastructure, mining and commodities; transport; technology and innovation; and life sciences and healthcare.
Wherever we are, we operate in accordance with our global business principles of quality, unity and integrity. We aim to provide the highest possible standard of legal service in each of our offices and to maintain that level of quality at every point of contact.
For more information about Norton Rose Fulbright, see nortonrosefulbright.com/legal-notices.
Law around the world
The content of this article is intended to provide a general guide to the subject matter. Specialist advice should be sought about your specific circumstances.