the patent re-examination process is as follows: (1) if a request for re-examination is made to the patent re-examination board, a request for re-examination shall be submitted, the reasons shall be explained, and relevant evidence shall be attached if necessary. If the written request for reexamination does not conform to the format, the person requesting reexamination shall make corrections within the time limit specified by the Patent Reexamination Board; If no correction is made at the expiration of the time limit, the request for reexamination shall be deemed not to have been made. The claimant may modify the patent application documents when making a request for reexamination or responding to the notice of reexamination of the Patent Reexamination Board; However, the amendment should be limited to eliminating the defects pointed out in the rejection decision or the notice of review. The revised patent application documents shall be submitted in duplicate. (2) The Patent Reexamination Board shall forward the accepted reexamination request to the original examination department of the patent administration department for examination. If the original examination department agrees to revoke the original decision at the request of the reexamination claimant, the Patent Reexamination Board shall make a reexamination decision accordingly and notify the reexamination claimant. (3) If, after reexamination, the Patent Reexamination Board considers that the reexamination request is not in conformity with the Patent Law and its detailed rules for implementation, it shall notify the petitioner of reexamination and require him to state his opinions within a specified time limit. If there is no reply at the expiration of the time limit, the request for reexamination shall be deemed to have been withdrawn; After stating opinions or making amendments, the Patent Reexamination Board considers that it still does not conform to the Patent Law and its detailed rules for implementation; A reexamination decision shall be made to maintain the original rejection decision; After reexamination, the Patent Reexamination Board considers that the original rejection decision is not in conformity with the Patent Law and its detailed rules for implementation; If the author thinks that the revised patent application document eliminates the defects pointed out in the original rejection decision, the original rejection decision shall be revoked and the original examination department shall continue the examination procedure. (4) The applicant for reexamination may withdraw his request for reexamination before the Patent Reexamination Board makes a decision. If the reexamination claimant withdraws his reexamination request before the Patent Reexamination Board makes a decision, the reexamination procedure shall be terminated.