Answer: Trademark review refers to: According to Article 28 of the Implementing Regulations of the Trademark Law, the Trademark Review and Adjudication Board has the power to hear trademark registration review cases, trademark opposition review cases and trademark cancellation review cases. Trademark reexamination is a legal procedure in which the Trademark Review and Adjudication Board re-examines the request for reexamination made by the Trademark Office when a party is dissatisfied with the Trademark Office's decision on trademark-related matters. 1. Types of trademark review: 1. Review where the party is dissatisfied with the Trademark Office’s rejection of the trademark registration application; 2. Review where the party is dissatisfied with the Trademark Office’s rejection of the registered trademark transfer application; 3. Review where the party is dissatisfied with the Trademark Office’s rejection of the registered trademark renewal application Application; 4. Review of the party's dissatisfaction with the Trademark Office's objection ruling; 5. Review of the party's dissatisfaction with the Trademark Office's cancellation of a registered trademark; 6. Review of the party's dissatisfaction with the Trademark Office's cancellation of an improperly registered trademark; 2. The time for review can be Request a review from the Trademark Review and Adjudication Board within fifteen days from the date of receipt of the rejection notice, ruling notice or revocation notice. If there are special reasons, you can apply for an extension before expiration. The extension time is 30 days, but you need to submit evidence of the extension, such as a certificate from the post office or neighborhood committee. Reasonable reasons to prove the delay in receiving the rejection notice, ruling notice or revocation notice! 3. Documents and materials required: 1. "Trademark Agency Power of Attorney": If you entrust a trademark agency to act as an agent, you must provide a power of attorney stamped with the applicant's seal. Applicants from outside mainland China who want to apply for trademark review in China must entrust a trademark agency to do so. 2. Various types of re-examination applications: If you entrust an agency to apply for trademark re-examination, the agency will prepare it. 3. Reasons and evidence materials 4. Decision on review The Trademark Review and Adjudication Board will make a final decision on approval or disapproval of registration for registration rejection review or objection review, and will notify the relevant parties in writing. The Trademark Review and Adjudication Board will make a final decision to maintain or revoke the trademark for other reviews, and notify the relevant parties in writing of the trademark review