The requirements for application materials for trademark opposition are:

1. The content is true, legal and valid;

2. It can prove that the applicant is qualified to apply for opposition. The basic facts, reasons for application, basis for application, proof that the opponent is a prior right holder or an interested party, etc.;

3. Other requirements.

Legal Basis

Article 24 of the "Regulations on the Implementation of the Trademark Law of the People's Republic of China"

Trademarks that have been initially reviewed and announced by the Trademark Office If an objection is filed, the opponent shall submit the following trademark opposition materials to the Trademark Office in duplicate and mark the original and duplicate copies:

(1) Trademark Opposition Application Form;

(2) Objection Proof of identity of the person;

(3) Violating the second and third paragraphs of Article 13, Article 15, Paragraph 1 of Article 16, Article 30 and Article 16 of the Trademark Law If an objection is raised on the grounds specified in Articles 31 and 32, the opponent shall prove that he is a prior right holder or an interested party.

The application for trademark opposition should have clear requests and factual basis, and should be accompanied by relevant evidence materials.