In filing a patent application and paying required fees, the USPTO provides forms and an electronic filing tool. Power of attorney simply signed.Four copies of the specification, claims, and abstract in English language. Under the Indian patent law, national phase (NP) patent applications are required to be filed within 31 months from the earliest priority date. The purpose of this guide is to provide you with basic information about filing a utility patent application with the USPTO. You are entitled to file an international patent application if you are a national or resident of a PCT Contracting State. Are you applying for a patent? Learn more about how a provisional patent can be used to protect your innovation in the interim.