Legal analysis: the invention patent will be terminated after 20 years. According to the relevant laws and regulations, the term of a patent for utility model is ten years, the design is fifteen years, and the invention is twenty years, counting from the date of application. And the patent right terminates at the expiration of the time limit, and the parties cannot renew it.
Legal basis: People's Republic of China (PRC) Patent Law.
Article 42 From the date of filing, the term of patent right for invention is 20 years, that for utility model is 10 year, and that for design is 15 year.
Article 43 The patentee shall pay the annual fee from the year when the patent right is granted.