In an exciting decision released today, the Supreme Court of Canada eliminates the Promise Doctrine in Canadian patent law, which was established by the Federal Courts of Canada some years ago.
Under the Promise Doctrine, patents could be invalidated if they did not live up to all of the promises made in the patent, such as to a particular utility or advantage. To the delight of many patent holders, the Supreme Court finds that a single use related to the nature of the subject matter is sufficient, and that utility must be established by either demonstration or sound prediction as of the filing date. The Court also confirms that a patent holder is not required to disclose the utility of the invention. For the full decision: https://scc-csc.lexum.com/scc-csc/scc-csc/en/item/16713/index.do