How long does it take to publish the invention patent?

Generally speaking, it takes eighteen months for an invention patent to be published. After receiving the patent application, the administrative department for patent in the State Council may make it public after 18 months from the date of application if it meets the requirements after preliminary examination. However, the applicant may request the disclosure of his application for a patent for invention in advance.

legal ground

Article 34 of the Patent Law of People's Republic of China (PRC)

After receiving an application for a patent for invention, the administrative department for patent in the State Council, after preliminary examination, finds that it conforms to the provisions of this Law, and shall publish it immediately after 18 months from the date of application. The patent administration department of the State Council may publish its application at an early date upon the request of the applicant.

Article 35

Within three years from the date of filing, the patent administration department of the State Council may conduct substantive examination according to the request made by the applicant at any time; If the applicant fails to request substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn. The patent administrative department of the State Council may, when it deems it necessary, examine the application for a patent for invention on its own.