Legal analysis: One year is available. After the trademark is invalid, there is still a one-year protection period, that is, only the company can successfully register the trademark within this year, and others will not be able to pass. Therefore, after a trademark expires, it is generally protected for one and a half years, and registration by others is not allowed. In other words: 1. A grace period of 6 months after expiration. 2. The original trademark owner can give priority to re-register, and the protection period is 12 months. After the above conditions expire, everyone has the right to register.

Legal basis: Article 40 of the Trademark Law of the People's Republic of China. If a registered trademark expires and needs to be continued to be used, the trademark registrant shall comply with the regulations within twelve months before expiration. Go through the renewal procedures; if you fail to do so during this period, you can be given a six-month extension period. Each renewal of registration is valid for ten years, starting from the day after the expiration of the previous term of validity of the trademark. If renewal procedures are not completed upon expiration, the registered trademark will be cancelled.

The Trademark Office shall announce the renewal of registered trademarks.