Patents Act, 1970
58. Amendment of specification before High Court
(1) In any proceeding before the High Court for the revocation of a patent the High Court may, subject to the provisions contained in section 59, allow the patentee to amend his complete specification in such manner and subject to such terms as to costs, advertisement or otherwise, as the High Court may think fit, and if in any proceedings for revocation the High Court decides that the patent is invalid, it may allow the specification to be amended under this section instead of revoking the patent.
(2) Where an application for an order under this section is made to the High Court, the applicant shall give notice of the application to the Controller and the Controller shall be entitled to appear and be heard, and shall appear if so directed by the High Court.
(3) Copies of all orders of the High Court allowing the patentee to amend the specification shall be transmitted by the High Court to the Controller who shall on receipt thereof cause an entry thereof and reference thereto to be made in the register.