Administrative Litigation Act Article 181

After the proceeding is stayed, a person assuming the litigation in accordance with the applicable laws shall submit statement for assumption of the litigation as soon as he/she is able to assume the litigation.The opposing party may also submit statement for assumption of the litigation.
中文原文 行政訴訟法第181條
訴訟程序當然停止後,依法律所定之承受訴訟之人,於得為承受時,應即為承受之聲明。
他造當事人亦得聲明承受訴訟。

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