Legal basis
Article 42 of the Patent Law of the People's Republic of China * * * The term of the invention patent is 2 years, the term of the utility model patent is 1 years, and the term of the design patent is 15 years, all of which are counted from the date of application. Article 43 The patentee shall pay the annual fee from the year when the patent right is granted. Article 44 In any of the following circumstances, the patent right shall be terminated before the expiration of the time limit: (1) Failing to pay the annual fee as required; (2) The patentee renounces his patent right in writing. Where the patent right is terminated before the expiration of the time limit, it shall be registered and announced by the patent administration department of the State Council.