What is the method to modify the patent application documents?

There are four ways to modify the patent application documents: 1, active modification: the applicant can withdraw his patent application at any time before being granted the patent right. 2. Passive modification: After examination, China National Intellectual Property Administration issued a notice of correction or a notice of examination opinions on the defects in the patent application that do not conform to the provisions of the Patent Law and its detailed rules for implementation, requiring the applicant to modify its application documents. 3. China National Intellectual Property Administration made the amendment ex officio. An ex officio amendment shall meet the following conditions and requirements: first, generally speaking, it is necessary to make such an amendment only when the patent application has the prospect of granting a patent right and is close to the final stage of examination; China National Intellectual Property Administration doesn't need to modify the text symbol errors in the application documents; Second, this modification should be limited to obvious mistakes in words and symbols. If the modification of the defect will have a substantial impact on the scope of patent protection, China National Intellectual Property Administration cannot replace the applicant to modify it; Third, China National Intellectual Property Administration should promptly notify the applicant of the changes made ex officio. 4. When there are many revisions, submit the reprinted replacement page and the revised comparison table. When there are few changes, submit the reprinted replacement page and the control page modified in the original copy. The applicant shall submit the reprinted replacement page and the control page directly modified in the original at the same time, so as to facilitate the examiner to detect the modified content. 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substantive examination within the time limit without justifiable reasons, the application shall be deemed to have been withdrawn.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.