According to the Patent Law, if no reason for rejection is found after substantive examination of the patent application, the patent administrative department of the State Council will make a decision to grant the patent right and issue a patent certificate. 199265438+February 3 1 The protection period of the invention patent applied before is fifteen years from the date of application, and the protection period of the utility model and design patent is five years from the date of application. Before the expiration, the patentee may apply for an extension of three years. 1 99365438+1October1The patent right for invention applied after is 20 years from the date of application, and the patent right for utility model and design is 10 years from the date of application.