Surrender of patent.
SEC. 24. Surrender of patent.—Any patentee, with the consent of all persons having grant or licenses or other right, title or interest in and to the patent and the invention covered thereby, which have been recorded in the Office, may surrender his patent or any claim or claims forming part thereof to the Director for cancellation.
Corrections of mistakes of Office.
SEC. 25. Corrections of mistakes of Office.—The Director shall have the power to correct without fee any mistake in a patent incurred through the fault of the Office when clearly disclosed by the records thereof, to make the patent conform to the records.
Correction of mistake of application.
SEC. 26. Correction of mistake of application.—On payment of the prescribed fee the Director is authorized to correct any mistake in a patent of a formal or clerical nature, not incurred through the fault of the Office.
Form and publication of amendment.
SEC. 27. Form and publication of amendment.—Amendment or correction of a patent as provided in section twenty-five and twenty-six hereof; shall be accomplished by a certificate of such amendment or correction authenticated by the seal of the Office and signed by the Director, which certificate shall be attached to the patent if the patent has been returned to the Director. Notice of such amendment or correction shall be published in the Official Gazette, and copies of the patent furnished by the Office shall include a copy of the certificate of the amendment or correction.
Source: Supreme Court E-Library, Republic of the Philippines. Philippine laws are public documents (works of the government).