The trademark registration certificate is valid. A registered trademark is valid for ten years, starting from the date of approval of registration. When a registered trademark expires and you need to continue using it, you should apply for trademark renewal. The renewal registration should be processed within 12 months before the trademark expires.

Trademark renewal can be handled by yourself or through a trademark agency. If you entrust a trademark agency to handle it, you only need to prepare relevant application materials. Documents required for trademark renewal:

1. Application for trademark renewal registration;

2. Letter of attorney;

3. Copy of business license The document must be stamped with the official seal (provided by the company) and a copy of the ID card (provided by the individual);

4. A copy of the trademark registration.

Notes on trademark renewal:

1. After the renewal application is approved, the Trademark Office will send the applicant a renewal certificate by mail according to the address filled in the application form.

2. If the renewal application does not meet the regulations, the Trademark Office will notify the applicant in writing by mail to make corrections within a time limit according to the address filled in the application form.

3. If the renewal application cannot be approved due to other reasons, the Trademark Office will notify the applicant in writing by mail according to the address filled in the application form.

4. If the applicant entrusts a trademark agency to handle the renewal application, the Trademark Office will not directly have any correspondence with the applicant, and all documents will be sent to the trademark agency.

5. The category of the application should be filled in according to the international classification category approved by the "Trademark Registration Certificate".