Trademark Act Article 48

Grounds for opposition and time limit on filingAny person may file an opposition to registration of a trademark with the Registrar Office within three months from the day following the date of publication of registration on the grounds that such registration falls under Paragraph 1 of Article 29, Paragraph 1 of Article 30, or Paragraph 3 of Article 65.The opposition referred to in the preceding paragraph may be filed for some of the designated goods or services of the registered trademark.An application for opposition shall be filed against a single registered trademark.
中文原文 商標法第48條
商標之註冊違反第二十九條第一項、第三十條第一項或第六十五條第三項規定之情形者,任何人得自商標註冊公告日後三個月內,向商標專責機關提出異議。
前項異議,得就註冊商標指定使用之部分商品或服務為之。
異議應就每一註冊商標各別申請之。

English translation for reference only; the Chinese text prevails. Not legal advice.