Hello, after receiving the trademark objection defense notice, you need to respond to the objection materials received within 30 days as specified in the trademark document. You need to submit the following materials:

1. Trademark objection defense application

2. A copy of the business license of the respondent (original trademark applicant). If he is an individual, provide a copy of his ID card

3. Trademark objection Original copy of defense letter

4. Statement of reasons for trademark objection defense and relevant evidence of use. (This is the most critical, the evidence must be sufficient and convincing).

I hope it can help you. If you have any questions, please feel free to ask further.