Following our recent database upgrade, the TMCH has scheduled an additional migration activity on 23 November 2026, starting at 08:00 UTC. This migration is a required step in replacing old infrastructure and is necessary to guarantee the continuity of the Trademark Clearinghouse.
During this maintenance window, the TMCH platform and API will be unavailable for approximately 2 hours. If any unexpected delays occur, we will provide further updates accordingly.
We recommend that you complete any time-sensitive activities before the maintenance begins.
No action is required on your part. All existing trademark records, account information and data will remain unaffected.
If you have any questions, please contact us at support@trademark-clearinghouse.com.