How long is the patent term?

The term of patent right refers to the legal term and termination time of patent right stipulated in the patent law. From the date of authorization announcement to the date of expiration of the patent right, the patent right shall be protected by law. According to the provisions of Article 42 of the Patent Law, the term of the patent right is calculated from the date of application, and the term of the invention patent is 20 years; The term of utility model patent and design patent is 10 year. 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.