1. 12 months before the expiration of the registered trademark; Second, a registered trademark shall be renewed six months after its expiration. As long as the trademark registrant applies for renewal within the time limit prescribed by law and pays the prescribed fee, the exclusive right to use a registered trademark can be extended.

Legal objectivity:

Article 40 of the Trademark Law stipulates that if a registered trademark needs to be used after its expiration, the trademark registrant shall go through the renewal procedures in accordance with the regulations within 12 months before the expiration; If it has not been handled during this period, it can be extended for six months. The validity period of each renewal registration is ten years, counting from the day after the last expiration of the trademark. If the renewal formalities are not completed at the expiration of the period, the registered trademark shall be cancelled. The Trademark Office shall announce the renewed registered trademark. Article 50 of the Trademark Law stipulates that if a registered trademark is revoked, declared invalid or will not be renewed upon expiration, the Trademark Office shall not approve an application for trademark registration that is the same as or similar to its trademark within one year from the date of revocation, invalidation or cancellation.