It takes a long time to authorize the patent after it is published.

Legal analysis: Generally, an invention patent is made public after 18 months from the date of application. If a real experiment is put forward after publication, it usually takes two passes to get authorization, which takes more than two years. In short, it depends on the specific case and the examiner. The law does not limit the examination time, but only the applicant's defense time (four months for one pass, two months for two passes, and two months later).

Legal basis: Article 34 of the Patent Law of People's Republic of China (PRC). After preliminary examination, if the administrative department for patent in the State Council considers that it conforms to the provisions of this Law, it shall publish the application for a patent for invention within 18 months from the date of submission. The patent administration department of the State Council may publish its application as soon as possible according to the requirements of the applicant.