Can I ask for a copy of the patent certificate after the transfer of the patent right?

No, a copy of the patent certificate is issued only when * * * has the same patentee, that is, if the patent has the patentee, the applicant can request the Patent Office to issue a copy of the patent certificate to the patentee, and others will not issue it.

in addition, the patent certificate and the copy of the patent certificate only register the status when the patent is authorized, so the patent certificate and the copy are generally meaningless certificates. To prove the actual state of the patent right, the copy of the patent registration wave of the patent office shall prevail, and anyone can request the patent office to issue a copy of the patent register.

Therefore, after the transfer of the patent right, you can ask the patentee for a certificate, and those who have the same obligee and have already issued a copy can ask for a copy, but the obligee registered on the certificate is still the original patentee, not the assignee.