1. If the name, address or other registered items of the trademark registrant change after the approved registration of the trademark, it shall apply to the Trademark Office for the corresponding change procedures.

2. Where the name or address of a trademark registrant is changed, the trademark registrant shall change all its registered trademarks together.

3. If someone else applies to stop using your trademark for three years and apply to cancel your trademark,

All relevant trademark documents of the Trademark Office will be mailed to you through the address on the trademark registration certificate. If you don't apply to the Trademark Office to change your name or address in time, the documents of the Trademark Office will not be delivered to you, and your trademark may be revoked (there are many precedents for this reason).