What is the time limit for patent submission and description of project changes?

1. Time limit for project change of patent submission specification: According to the detailed rules for the implementation of China's patent law, an application should be made for the change of patent specification before the patent administration department grants the patent right, and the change fee should be paid. 2. Legal basis: Article 89 of the Detailed Rules for the Implementation of the Patent Law, the patent administrative department of the State Council shall set up a patent register to register the following matters related to patent applications and patent rights: (1) the grant of patent rights; (2) Transfer of patent application right and patent right; (3) Pledge, preservation and rescission of the patent right; (four) the filing of the patent licensing contract; (5) invalidation of the patent right; (6) Termination of the patent right. (7) Restoration of the patent right; (8) Compulsory license for patent exploitation; (9) the change of the name, nationality and address of the patentee.