According to the Patent Law of People's Republic of China (PRC)
Article 42 The term of patent right for invention is 20 years, and the term of patent right for utility model and patent right for design is 10 years, counting 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:
(a) failing to pay the annual fee in accordance with the provisions;
(2) The patentee waives 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.
Extended data
Case:
The new ceramic foam filter can effectively remove or reduce the inclusions in molten metal, make the surface of metal castings smooth and reduce the rejection rate. A few years ago, a company in Shandong invited German scientists to conquer its key technology with an annual salary of nearly 10 million yuan, and invested tens of millions of yuan to build a new production line. However, when the product was exported, it was suddenly found that the international patent of this technology had already been won by foreign enterprises, which meant that the export was blocked and the production line of tens of millions of yuan might suddenly become "scrap iron".
The case of "patents go all over the world, and it is difficult to move without patents" magnifies the importance of patents. On various occasions, Li Haibo, director of Jinan Intellectual Property Office, often mentioned these two cases. He tried to tell enterprises, "China enterprises should grow and go to the international market, and don't forget innovation and patents, otherwise they will run naked in winter."
In Jinan and even Shandong, Jiuyang has set a benchmark for patent protection. Li Haibo believes that Jiuyang, which just won the "China Patent Gold Award", is a typical case of China enterprises "fighting their way out with patents". Its patent strategy and practice provide a new perspective for the world to understand China enterprises.
Baidu Encyclopedia-People's Republic of China (PRC) Patent Law