If the applicant is dissatisfied with the rejection decision of the Patent Office after the patent application is rejected, they may submit a request for reexamination to the Patent Reexamination Board within 3 months from the date of receiving the rejection notice.
If the applicant is dissatisfied with the reexamination decision made by the Patent Reexamination Board to uphold the rejection decision of the Patent Office, they may file a lawsuit with the people's court within 3 months from the date of receiving the notice.