1. The protection period of the patent right obtained according to the patent application before 1992 12 3 1 is applicable to the original patent law, that is, the protection period of the invention patent is 15 years from the date of filing; The term of protection of utility model patents and design patents is five years from the date of application, and the patentee may apply for renewal three years before the expiration.
2. After 1 99365438+101,the protection period of the patent right obtained according to the patent application is applicable to the revised patent law, that is, the protection period of the invention patent is 20 years from the date of application; The protection period of utility model patent and design patent is 10 year from the date of application.