1. Duration of patent right in building laws and regulations

Legal analysis: China's patents are divided into three categories, including invention patents, utility model patents and design patents. Among them, different types of patents have different validity periods. As an invention patent, the validity period is 20 years from the date of authorization announcement to the date of application. However, in the case of the latter two patents, the validity period is from the date of authorization announcement to 10 years after the filing date.

Legal basis: People's Republic of China (PRC) Patent Law.

Article 39 If the application for a patent for invention is rejected after substantive examination, the administrative department for patent in the State Council shall make a decision to grant the patent right for invention, issue a patent certificate for invention, register it, and announce the patent right for invention, which shall take effect as of the date of announcement.

Article 40 If the application for a patent for utility model or design is not found to be rejected after preliminary examination, the administrative department for patent in the State Council shall make a decision to grant the patent right for utility model or design, issue the corresponding patent certificate, and register and announce it at the same time.