1. The opponent can only object to a trademark that has been initially approved by the Trademark Office and published in the "Trademark Announcement" during the objection period. The objection period is 3 months, starting from the day after the preliminary approval announcement. If the last day of the objection period is a legal holiday, it can be postponed to the first working day after the holiday. 2. The date on which the opponent submits the opposition application to the Trademark Office: if submitted directly, the date of submission shall prevail; if submitted by mail, the date of the postmark shall prevail; if the postmark date is unclear or there is no postmark, the date of receipt by the Trademark Office shall prevail. The date of receipt shall prevail; if it is submitted through a courier company other than a postal company, the date of collection and delivery by the courier company shall prevail. If the date of collection and delivery is unclear, the date of actual receipt by the Trademark Office shall prevail. However, this is excepted if the party concerned can provide evidence of the actual date of receipt and delivery. 3. The objection raised by the opponent should have clear reasons, facts and legal basis for the objection. The reasons for the objection should be clearly stated in words to facilitate the opposing party's defense and the Trademark Office's review. If there are no clear reasons, facts and legal basis for the objection, the objection application will not be accepted. If the objection applicant needs to supplement evidence and materials, he should declare it in the objection application and submit it within 3 months from the date of submitting the objection application. Failure to declare will be deemed as giving up the submission of supplementary materials.