Provide proof of change and a copy of the applicant’s identity document to the trademark agency. If entrusting an agent, submit a power of attorney. If applying directly at the acceptance hall, a copy of the handler's ID card must be submitted. If you apply to change the name of the registrant, you must also submit a change certificate issued by the registration authority. Article 41 of the Trademark Law stipulates that if a registered trademark needs to change the name, address or other registration matters of the registrant, a change application must be submitted.