Trademark Act Article 52

Invariance of concerned party in oppositionA transfer of the right of a trademark of which the opposition proceedings is underway shall have no effect on the said opposition proceedings.A transferee of trademark right referred to in the preceding paragraph may declare to assume the position of the opposed party in the opposition proceedings.
中文原文 商標法第52條
異議程序進行中,被異議之商標權移轉者,異議程序不受影響。
前項商標權受讓人得聲明承受被異議人之地位,續行異議程序。

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