RA 8293 - Intellectual Property Code of the Philippines

25(c) Correct mistakes or errors, other than those referredto in letter (b), made in good faith: Provided, That where thechange would result in a broadening of the extent of protectionconferred by the patent, no request may be made after theexpiration of two (2) years from the grant of a patent and thechange shall not affect the rights of any third party which hasrelied on the patent, as published.59.2. No change in the patent shall be permitted underthis section, where the change would result in the disclosurecontained in the patent going beyond the disclosure contained inthe application filed.59.3. If, and to the extent to which the Office changesthe patent according to this section, it shall publish the same. (n)SEC. 60. Form and Publication of Amendment. – Anamendment or correction of a patent shall be accomplished by acertificate of such amendment or correction, authenticated bythe seal of the Office and signed by the Director, which certificateshall be attached to the patent. Notice of such amendment orcorrection shall be published in the IPO Gazette and copies of thepatent kept or furnished by the Office shall include a copy of thecertificate of amendment or correction. (Sec. 27, R.A. 165)CHAPTER VICANCELLATION OF PATENTS ANDSUBSTITUTION OF PATENTEESEC. 61. Cancellation of Patents. – 61.1. Any interestedperson may, upon payment of the required fee, petition to cancelthe patent or any claim thereof, or parts of the claim, on any ofthe following grounds:(a) That what is claimed as the invention is not new orpatentable;(b) That the patent does not disclose the invention in amanner sufficiently clear and complete for it to be carried out byany person skilled in the art; or