If the name (also called enterprise name) and address of a trademark registrant change, the registrant shall apply to the Trademark Office for the change formalities in time, which is clearly required by law and also for the need of maintaining the order of trademark management. The fundamental difference between trademark registrant's change of name and address and transfer is that the former does not transfer the exclusive right to use a trademark, while the latter transfers it. Trademark registrant is the subject of trademark law protection, and the name of trademark registrant is an important matter in trademark registration. If the name of a trademark registrant changes without going through the formalities of change, it will not be conducive for the trademark authorities to grasp the actual situation of the trademark owner in time. At this time, if the trademark owner applies for the registration of the original trademark with a new name, it is likely that the trademark registration authority will reject the trademark application because it does not know that the registrant's name has changed, which is not conducive to the enterprise obtaining the trademark right in time and is difficult to guarantee. Therefore, although the change of the name of an enterprise, that is, the name of a trademark registrant, does not involve the change of the exclusive right holder, the registrant should also apply to the Trademark Office for change in time.

The address of a trademark registrant is as important as its name. It is something that trademark management authorities need to master in trademark management. If the address of the registrant changes, it must also apply for change in time.

To apply for changing the name and address of a trademark registrant, certain procedures shall be performed. Where a trademark registrant changes its name, it shall submit an Application for Changing the Name of a Trademark registrant and a certificate of change to the Trademark Office. After the approval of the Trademark Office, the relevant contents shall be changed in the trademark registration book, and the corresponding certificate of change shall be issued to the registrant and announced. Similarly, an application for changing the address of a trademark registrant shall be submitted to the Trademark Office together with an application for changing the address of a trademark registrant and a certificate of change. After the approval of the Trademark Office, the relevant contents shall be changed in the trademark registration book, and the corresponding certificate of change shall be issued to the registrant and announced. Where the name or address of a trademark registrant is changed, the trademark registrant must handle all its registered trademarks together.