When the trademark applied for registration passes the preliminary examination and enters the three-month opposition period after the preliminary announcement, once it is opposed by others, the trademark opposition procedure will be initiated. The trademark applied for registration becomes an opposed trademark. Even if a registration announcement has been published, the registration announcement is invalid (Note: In order to publish the "Trademark Announcement" on time, the "Trademark Registration Announcement" is often published a few days before the expiration of the opposition period. The printed version will be arranged every day. When someone else’s trademark objection is filed a few days before or even the last day of the opposition deadline, plus the time required for mailing, there will be a situation where both the objection and the "registration announcement" will be filed. ). Whether the applicant can obtain the exclusive right to use the trademark depends on the Trademark Office’s ruling on opposition to the trademark.

After accepting the trademark opposition application, the Trademark Office will promptly send the opponent's "Trademark Opposition Application" and a copy of the objection reasons and evidence materials to the opposed party. The party to be opposed shall respond within 30 days from the date of copy of the trademark objection letter, etc. If the party opposed does not make a written response within the limited time limit, it shall be deemed to have waived the right to respond, and the opposition procedure shall proceed as usual.