When there is a typographical error in the patent certificate, the patentee may return the certificate and request the Patent Office to correct it. If the patent office verifies that it is a typographical error, it shall correct it and issue a replacement card to the patentee. The original certificate is marked with the word "changed" and then kept in the patent application documents.
You can fill in the document copy request and opinion statement to explain the reasons, and send these two forms together with the original patent certificate to the document issuing office of the preliminary examination process department of China National Intellectual Property Administration for correction. (File copy request and opinion statement can be downloaded from China National Intellectual Property Administration website).