To file a patent application, a set of forms has to be submitted to the patent office. To file a patent application, you will have to submit form 1, form 2, form 3 and form 5.To get a patent grant in India an applicant must fill out the mentioned forms and duly submit it to the Indian Patent Office. Under the Indian patent law, national phase (NP) patent applications are required to be filed within 31 months from the earliest priority date. To file a patent application, a set of forms has to be submitted to the patent office. The forms can be submitted online. Application for Grant of Patent, Form 01: This form, filed before the Indian Patent Office (IPO), serves as an application for a patent. This information had to be provided within six months from the date of filing the Indian application. I assent to the invention referred to in the above declaration, being included in the complete specification filed in pursuance of the stated application.