The preliminary examination method of an application for a patent for invention: the Patent Office examines whether the applicant's application documents are complete; Whether the applicant is qualified to apply; And whether the applicant has paid the application fee. If the preliminary examination meets the requirements, the Patent Office may publish it within 18 months from the date of application.
Legal objectivity:
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, shall immediately publish it 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 of the Patent Law of People's Republic of China (PRC) * * * Within three years from the date of filing, the patent administration department of the State Council may, at the request of the applicant, conduct substantive examination of the application 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substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn.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.