A post-registration opposition system is embraced in the Trademark Law. Anyone may file an opposition against a trademark registration within 3 months from its registration date.
Opposition proceedings in this country are conducted on a pleading-and-defense basis under which the two parties are allowed to alternately present their contentions in written form, and Taiwan’s IP Office, upon receipt of a brief/counterstatement lodged by one party, will serve a copy thereof on the other party along with a notification for filing a response before a designated deadline, which is generally within 30 days. This procedure will continue until the two parties have exhausted their views and have no observations or new evidence to file.