What action is necessary if the attorney's address changes?

When an attorney's address changes, it is important to update the information across all related serial numbers. This ensures that the United States Patent and Trademark Office (USPTO) has accurate and current contact information on file for communication regarding trademark applications and registrations. Keeping the information up to date prevents potential delays in correspondence and ensures that all parties involved are promptly informed of any actions, deadlines, or decisions related to the trademark.

Changing the address only for clients can lead to a disconnect where the USPTO may not have the correct address on file for legal correspondence. Filing a new application is not necessary just because of an address change, as it pertains to maintaining existing applications and registrations rather than creating new ones. Consulting a legal advisor, while always a prudent course of action in legal matters, is not a required step specifically for addressing an address change in existing trademark applications.