Application Registration of Patent Agent, Form 22 pdf (51 KB). To file a patent application, a set of forms has to be submitted to the patent office.The process of filing of Patent Application in India, couple of forms (Form-1, Form-2, Form-3, and Form-5) has to be submitted to the patent office. Out of the forms mentioned above, Form 1 and Form 2 along with the official fees are mandatory to be filed to initiate the Patent filing procedure. How to File a Patent in India?