Administrative Litigation Act Article 99

In cases of meritless expenses incurred by the intervener for reasons imputable to him/her, the court may order such intervener to bear partial or all of the expenses.The expenses incurred as a result of intervention as provided in Article 44 shall be borne by the intervener. However, if the opposing party shall bear the litigation expenses pursuant to the provision of Paragraph 1 of Article 98 and the application of Article 79 to Article 84 inclusive of the Code of Civil Procedure mutatis mutandis, the expenses shall be borne by such party.
中文原文 行政訴訟法第99條
因可歸責於參加人之事由致生無益之費用者,行政法院得命該參加人負擔其全部或一部。
依第四十四條參加訴訟所生之費用,由參加人負擔。
但他造當事人依第九十八條第一項及準用民事訴訟法第七十九條至第八十四條規定應負擔之訴訟費用,仍由該當事人負擔。

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