Patent Act

Marginal note:Issue of new or amended patents

• 47 (1) Whenever any patent is deemed defective or inoperative by reason of insufficient description and specification, or by reason of the patentee’s claiming more or less than he had a right to claim as new, but at the same time it appears that the error arose from inadvertence, accident or mistake, without any fraudulent or deceptive intention, the Commissioner may, on the surrender of the patent within four years from its date and the payment of a further prescribed fee, cause a new patent, in accordance with an amended description and specification made by the patentee, to be issued to him for the same invention for the then unexpired term for which the original patent was granted.

• Marginal note:Effect of new patent

  (2) The surrender referred to in subsection (1) takes effect only on the issue of the new patent, and the new patent and the amended description and specification have the same effect in law, on the trial of any action thereafter commenced for any cause subsequently accruing, as if the amended description and specification had been originally filed in their corrected form before the issue of the original patent, but, in so far as the claims of the original and reissued patents are identical, the surrender does not affect any action pending at the time of reissue or abate any cause of action then existing, and the reissued patent to the extent that its claims are identical with the original patent constitutes a continuation thereof and has effect continuously from the date of the original patent.

• Marginal note:Separate patents for separate parts

  (3) The Commissioner may entertain separate applications and cause patents to be issued for distinct and separate parts of the invention patented, on payment of the fee for a reissue for each of the reissued patents.