1. Steps for trademark opposition defense 1. After receiving the trademark objection letter, the Trademark Office generally undergoes necessary formal review. The trademark objection letter and related materials that have passed the review will be reviewed before the objection is filed. One month after the expiration of the period, a copy of the trademark opposition letter will be forwarded to the opponent, who shall respond within thirty days from the date of receipt of the trademark objection defense notice. It is up to the respondent to decide whether to respond. 2. After the Trademark Office receives the respondent's defense, it will make a ruling in accordance with the law based on the facts and reasons stated by the parties. If there is no defense at the expiration of the time limit, the Trademark Office will make a ruling in accordance with the law as if there is no defense, and the ruling results will be made into a formal document and served to the parties. 3. If either party is dissatisfied with the ruling, it may apply to the Trademark Review and Adjudication Board for review within fifteen days from the date of receipt of the ruling, and the Trademark Review and Adjudication Board will make a final decision. 2. How long is the time limit for trademark objection defense? The opposed party must submit the defense materials to the Trademark Office within 30 days from the date of receipt of the trademark objection letter. According to the provisions of Article 10 of the "Regulations for the Implementation of the Trademark Law", if the party submits the defense and relevant evidence materials directly, the date of submission shall prevail; if it is mailed, the date of the postmark shall prevail. If the postmark date is unclear or there is no postmark, the actual date of receipt by the Trademark Office shall prevail. The last legal holiday can be extended by one day. However, this is excepted if the party concerned can provide evidence of the actual postmark date. Although the law stipulates this proviso, the parties concerned should try their best to send the objection reply within the objection period and ensure that the postmark is clear to avoid unnecessary trouble. If the respondent's defense materials are submitted by mail and the postmark date is unclear, the date of actual receipt by the Trademark Office will be the date of defense. If the actual receipt date exceeds the statutory opposition period, it may result in a ruling being made, which will inevitably have an adverse impact on the interested parties and will also have a negative impact on the Trademark Office’s opposition review work.