The original opponent shall submit written reasons for the defense and corresponding evidence materials to the Trademark Review and Adjudication Board within 30 days from the date of receipt of the notice of defense for review of trademark non-registration and a copy of the application for review of trademark non-registration. The original opponent should submit the materials required for the review defense of trademark refusal to be registered in the following order:

1. Directory of defense materials;

2. Defense letter for review of trademark refusal to be registered;

3. A copy of the preliminary review announcement page of the opposed trademark;

4. If a trademark agency is entrusted to handle the review application, a trademark review agency signed or stamped by the original opponent should also be submitted. Letter of attorney;

5. Catalog of evidence and evidence materials;

6. The original notice of review of trademark disapproval and the envelope sent by the Trademark Review and Adjudication Board. Except for the original notice of review of trademark disapproval and the envelope sent by the Trademark Review and Adjudication Board, all other materials should be submitted in duplicate.

Legal basis:

Article 33 of the "Trademark Law of the People's Republic of China" If an objection is raised against a trademark that has been initially approved and announced, the Trademark Office shall hear the objection. The person and the respondent state the facts and reasons, and after investigation and verification, a ruling is made. If the party concerned is dissatisfied, he may apply to the Trademark Review and Adjudication Board for review within fifteen days from the date of receipt of the notice. The Trademark Review and Adjudication Board will make a ruling and notify the opponent and the opposed party in writing. If the party concerned is dissatisfied with the ruling of the Trademark Review and Adjudication Board, it may file a lawsuit with the People's Court within thirty days from the date of receipt of the notice. The people's court shall notify the other party to the trademark review procedure to participate in the litigation as a third party. Once the opposition application is supported and the trademark applicant files for opposition review, the opponent can make a "reply" in the opposition review procedure, and the opponent must actively participate in the opposition review procedure.