After filing a reexamination request, in addition to receiving the reexamination request acceptance notice, if the review committee examiner finds that there are substantive defects in the application documents that need to be revised, the reexamination committee will issue a reexamination notice. This notice The letter may be issued multiple times during the reexamination stage, similar to the examination opinion notice in the application process. Time limit for reply to review: 15 days from the date of issuance of the review notice 1 month