Versions of s. 122(4)

The new certificate is deemed to have been issued on the day on which the new patent is issued. The original certificate and the new certificate have the same effect in law, in any action commenced after the issuance of the new certificate for any cause accruing after that issuance, as if the new patent had been set out in the original certificate; however, insofar as the claims of the new patent and the original patent are identical, the issuance of the new certificate does not affect any action pending at the time of the issuance of the new certificate or abate any cause of action that existed at that time and the new certificate constitutes a continuation of the original certificate and has effect accordingly.