RESTORATION OF LAPSED PATENTS :

Section 60 provides that where a patent has ceased to have effect by reason of failure to pay any renewal fee within the period prescribed under section 53 or within period as may be allowed under section 142(4), 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 eighteen months from the date on which the patent ceased to have effect, make an application for the restoration of the patent.