According to the provisions of the Patent Law, the applicant can modify the patent application documents after they are submitted.
An applicant for a patent for invention may, within three months after making a request for substantive examination or issuing a notice in China National Intellectual Property Administration that the application for a patent for invention has entered the substantive examination stage, voluntarily propose amendments to its application for a patent for invention. An applicant for a patent for utility model or design may modify the application documents within two months from the date of patent application.