Under what circumstances does the patent right terminate?

Legal analysis: (1) Failing to pay the annual fee as required; (2) The patentee waives his patent right in writing; (3) The term of the patent right expires.

Legal basis: Article 44 of the Patent Law of People's Republic of China (PRC) is under any of the following circumstances, and 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.