Depends on whose patent right it is. If it cancels itself, it may submit a request to give up the patent right or stop paying the annual patent fee. If someone else's patent is revoked, you need to file a request for invalidation with the Patent Reexamination Board. The applicant may withdraw his patent application at any time before being granted the patent right. In addition, after the patent is granted, according to the provisions of the patent law, the annual fee can be invalidated, exempted or stopped after the patent is granted.
legal ground
patent law
26
To apply for a patent for invention or utility model, a written request, a specification, an abstract thereof, a patent claim and other documents shall be submitted. The request shall specify the name of the invention or utility model, the name of the inventor, the name and address of the applicant and other matters.