1. The validity period of a patent for an invention is twenty years. According to relevant laws and regulations, the term of a patent right is twenty years, while the term of a design patent right and a utility model patent right is ten years, and the term of the aforementioned three patent rights is calculated from the application date.
2. Legal basis: Patent Law of the People's Republic of China
Article 42: The term of an invention patent right is twenty years, and the term of a utility model patent right and a design patent right is ten years, both calculated from the date of application.
Article 43: The patentee shall pay an annual fee starting from the year in which the patent right is granted.
Article 44: In any of the following circumstances, the patent right shall terminate before the expiration of the term:
(1) Failure to pay annual fees in accordance with regulations;
(2) The patentee declares in writing that they have waived their patent rights. If the patent right terminates before the expiration of the term, it shall be registered and announced by the patent administrative department of the State Council.
