If your address changes during the trademark registration period, you need to promptly notify the trademark registration agency to update your contact information. The following is the general processing method:

1. Contact the trademark registration agency: Contact the trademark registration agency responsible for processing your trademark registration application, usually the Trademark Office or Trademark Registration Office. You can contact them by phone, email or through the online application system.

2. Provide change notice: Provide your address change notice to the trademark registration agency. Typically, you will need to complete and submit relevant forms or documents to ensure that your change notification is officially accepted. These forms and documents may vary from country to country and you can check with your trademark registration authority for requirements.

3. Update contact information: The trademark registration agency will update your contact information based on the change notice you provide. This will allow them to send any communications regarding your trademark registration application to your new address.

Important:

It is important to ensure that your address information is updated during trademark registration. If you fail to notify the trademark registration authority in time, it may cause you to miss important communications or documents, and may even cause your trademark registration application to be invalid.

Please note that the above is only a general guide, and specific processing methods may vary by country and region. It is recommended that you look for relevant guidance on the official website of the trademark registration agency or contact their customer service department for accurate instructions.

I hope the above answer meets your requirements. If you have additional questions, please feel free to ask.

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