The Canadian government is proposing modifications to the Patent Rules to finally introduce a Patent Term Adjustment (PTA) system[1]. The PTA will provide an additional term for patents for unreasonable delays in their issuance. The PTA system is an obligation deriving from the Canada-United States-Mexico Agreement (CUSMA) that entered into force on July 1, 2020.

This new PTA system will take effect on January 1, 2025, and it will apply to Canadian patent applications filed on or after December 1, 2020 that have suffered unreasonable delays in their issuance. An unreasonable delay is defined as a delay in issuance of more than five years from the filing date or three years from the examination request date, whichever is later, with certain exclusions.