Hello, the registered trademark is valid for 10 year. Where it is necessary to continue to use a registered trademark after its expiration, an application for renewal shall be filed within one year before the expiration. If you fail to apply within this period, there is still a grace period of six months, but there is a charge for the grace period. If no application is filed within the grace period, the Trademark Office will revoke it after the expiration. An application for renewal of a registered trademark may be entrusted to a trademark agency recognized by the state.

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