How to apply for substantive examination of a patent: Within three years from the date of application, the applicant may request for substantive examination at any time. The patent administration department of the State Council may conduct a substantive examination according to the request. If no reason for rejection is found after the substantive examination, An invention patent certificate is issued, registered and announced at the same time. Legal basis: "Patent Law of the People's Republic of China" Article 26 When applying for a patent for invention or utility model, a request, description, abstract, claims and other documents shall be submitted. The request shall state the name of the invention or utility model, the name of the inventor, the name and address of the applicant, and other matters. The description shall provide a clear and complete description of the invention or utility model, which shall be subject to the ability of a person skilled in the technical field to realize it; when necessary, there shall be accompanying drawings. The abstract should briefly describe the technical key points of the invention or utility model. The claims should be based on the description and clearly and briefly define the scope of patent protection requested. For inventions and creations that rely on genetic resources, the applicant shall state the direct source and original source of the genetic resource in the patent application document; if the applicant is unable to explain the original source, the applicant shall state the reasons.