What are the requirements for withdrawing a patent application

Where the applicant withdraws his patent application, he shall file a declaration with the patent administration department of the State Council, stating the name of the invention-creation, the application number and the application date. The declaration of withdrawing the patent application was made after the patent administrative department of the State Council made preparations for publishing the patent application documents, which should still be published; However, the statement of withdrawing the patent application shall be announced in the patent bulletin published later. Article 36 of the Implementing Rules for the Patent Law