An invention patent is valid for 20 years. According to the relevant regulations, the term of validity of invention patents in China is 20 years, and the term of validity of utility model patents and design patents is 10 years, both of which are counted from the date of application.

legal ground

Article 42 of the Patent Law of People's Republic of China (PRC), which came into effect in June 1 year.

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.

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.