Why has patent approval been rejected?

First, the notice of patent application acceptance will usually be sent to your mailing address within two weeks, and you don't need to pick it up yourself.

Second, you can call the patent office.

Third, the admission notice is lost.

The function of patent acceptance notice:

An application for a patent for invention-creation has to go through many links from submission to authorization before the patent examination and approval procedure can be completed. Accepting a patent application is only the first step, and it is also the first step of the patent examination and approval procedure. As long as the applicant submits the application documents such as the request, the specification, the appended drawings of the specification and the patent claim in accordance with the relevant provisions of the Patent Law, the Patent Office shall accept the application and send the Notice of Acceptance to the applicant. The notification of acceptance gives the application number and application date determined by the Patent Office. The notification received by the applicant only indicates that the Patent Office has accepted the application, and in no way means that the Patent Office has granted the patent right to the patent application. Only after the applicant receives the Notice of Granting a Patent Right and Going through the Registration formalities made by the Patent Office, goes through the registration formalities on schedule, pays the relevant fees, obtains the patent certificate, and the Patent Office announces the patent, can the application be said to have obtained the patent right at this time.