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Validity period of national natural science foundation patent
The patent is valid for 20 years, such as applying on March 5, 2020. After your authorization, if you continue to renew the fee, the patent will be valid until March 4, 2040.

The term of patent right refers to the legal term and termination time of patent right. If the patent right has not been terminated for other reasons since the announcement of the authorization of the patent right, the patent right shall be terminated on the expiration of the patent right period. According to the provisions of the Patent Law, the term of the invention patent right is 20 years, the utility model is 10 years, and the design is 15 years, all of which are counted from the date of application.

Where an application for a patent for invention has undergone substantive examination, and an application for a patent for utility model or design has undergone preliminary examination, and no reason for rejection is found, the Patent Office shall make a decision to grant the patent right, issue a patent certificate, and register and announce it in the patent register and patent bulletin at the same time. The patent right shall take effect as of the date of announcement.