When will the patent application documents be actively revised?

For the invention patent, the applicant can only make active amendments under the following two circumstances: 1) when making a request for substantive examination; 2) Within three months from the date of receiving the notification from the Patent Office that the application for a patent for invention has entered the substantive examination stage. For the patent for utility model or design, the opportunity for active modification is that the applicant can actively modify the application for patent for utility model or design within 2 months from the date of application. The applicant should note that when replying to the notice of examination opinions issued by the Patent Office, it is not allowed to make any active amendments.