After the trademark registration certificate expires, generally it can no longer be used for trademark protection. The expiration of a trademark registration certificate means that the protection period of the trademark right has ended, and the trademark owner can no longer rely on the registration certificate to claim trademark rights.

The validity period of a trademark registration certificate is usually stipulated by trademark laws and can be clearly stated on the trademark registration certificate. Once the trademark registration certificate expires, the trademark owner will lose the exclusive rights to the trademark. Others may apply to use the same or similar trademark, and the trademark owner will not be able to use the trademark registration certificate as a basis to prevent their use.

In order to maintain the validity of trademark rights, before the trademark registration certificate expires, the trademark owner usually needs to apply for renewal or update in accordance with relevant regulations to extend the protection period of the trademark. Applications for renewal or renewal need to be submitted before the trademark registration certificate expires, and the corresponding fees must be paid.

If the trademark registration certificate has expired, the trademark owner may consider re-applying for trademark registration to protect its trademark rights. This means that the trademark registration application needs to be resubmitted and undergo a new round of review procedures.

It should be noted that the trademark law regulations of different countries and regions may be different. Therefore, in specific cases, it is recommended to consult the local trademark registration agency or a professional lawyer to obtain accurate legal advice and guidance.

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