You can go to the State Knowledge Bureau or its local institutions and ask for a copy of the patent register, which will record the current situation of the patent right in detail, such as whether it is valid or not, who the patent right belongs to now, and so on. With this, you can transfer to another hospital.
In addition, the transfer of the patent right can only take effect after going through the formalities in the National Information Bureau, otherwise the patent right will not be transferred.