If a registered trademark needs to be continued to be used after it expires, an application for renewal of registration should be made within 12 months before expiration. If you fail to apply during this period, there is still a 6-month extension period. If an application has not been filed within the extension period, the Trademark Office will cancel it after the expiration of the extension period. After the Trademark Office examines the trademark renewal registration application, it will issue a trademark renewal certificate and will not issue another trademark registration certificate. The original trademark registration certificate and trademark renewal certificate will be used together.