Legal basis:
Article 42 of the Patent Law, the term of the invention patent right is 20 years, and the term of the utility model patent right and the design patent right is 10 years, counting from the date of application.
Guide to Patent Examination Part V Chapter 9 2. 1 Expiration of patent right.
The term of the invention patent right is 20 years, and the term of the utility model patent right and the design patent right is 10 years, both counting from the date of application. For example, the application date of a utility model patent is1September 6, 1999, the patent period is1September 6, 1999 to September 5, 2009, and the patent deadline is September 6, 2009 (it will not be postponed in case of holidays).