Do I need to return the original patent if the patentee changes? Waiting online, thank you!

There is no need to send the original patent certificate to the State Intellectual Property Office.

In addition, the State Intellectual Property Office will not issue a new certificate due to a change in the patentee. If you need to prove the legal status of the patent in the future, you can request a copy of the patent register from the State Intellectual Property Office.