Patents Act, 1970
60. Applications for restoration of lapsed patents
(1) Where a patent has ceased to have effect by reason of failure to pay any renewal fee within the prescribed period or within that period as extended under sub-section (3) of section 53, the patentee or his legal representative, and where the patent was held by two or more persons jointly, then, with the leave of the Controller, one or more of them without joining the others, may, within one year from the date on which the patent ceased to have effect, make an application for the restoration of the patent.
(2) The provisions of sub-section (1) shall also apply to patents granted before the commencement of this Act, subject to the modification that for the reference to the prescribed period or to sub-section (3) of section 53, there shall be substituted a reference to the period prescribed therefor under the Indian Patents and Designs Act, 1911 (2 of 1911) or to sub-section (2) of section 14 of that Act.
(3) An application under this section shall contain a statement, verified in the prescribed manner, fully setting out the circumstances which led to the failure to pay the prescribed fee, and the Controller may require from the applicant such further evidence as he may think necessary.