File Wrapper Estoppel in Canada – How Far Are the Courts Willing to Go?
By: Stacey Dunn Since the coming-into-force date of new section 53.1 of the Patent Act in December 2018, Canadian practitioners have been waiting to see how broad this “file wrapper estoppel” provision will be interpreted. Recently, the Federal Court released a decision that expands the scope of s. 53.1 to potentially include foreign prosecution file …
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