Notice concerning the process for the reissue of patents

The Patent office wishes to advise clients of a change to the office practice relating to the patent reissue process. We no longer require a patentee to return an original patent before a reissued patent is sent.

An original patent should never be returned to the Patent Office for the purpose of a reissue under subsection 47(1) of the Patent Act.

An application for a reissue made in accordance with section 43 and Form 1 of the Patent Rules includes a surrender of the original patent. The surrender of an original patent will take effect on the issue of a new patent, in accordance with subsection 47(1) of the Patent Act.

If you have any questions, we invite you to communicate with Andrée Patry, Manager, Operations Sector, at 819-635-3557, or at

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