Administrative Litigation Act Article 43

If a third party files a motion for intervention in accordance with the preceding Article, intervention pleadings shall be submitted to the administrative court where the principal litigation is pending and shall include the following matters:1. The principal litigation and its parties;2. How the rights or legal interests of the intervener will be jeopardized as a result of the litigation of revocation; and3. The statement of intervention.The administrative court may dismiss the motion by a ruling if the court regards that the initiation of the motion prescribed in the preceding Paragraph does not comply with the preceding Article.An appeal may be taken from the ruling provided in the preceding Paragraph.An intervener may conduct acts of litigation before the ruling dismissing the motion for intervention becomes binding.
中文原文 行政訴訟法第43條
第三人依前條規定聲請參加訴訟者,應向本訴訟繫屬之行政法院提出參加書狀,表明下列各款事項:
一、本訴訟及當事人。
二、參加人之權利或法律上利益,因撤銷訴訟之結果將受如何之損害。
三、參加訴訟之陳述。
行政法院認前項聲請不合前條規定者,應以裁定駁回之。
關於前項裁定,得為抗告。
駁回參加之裁定未確定前,參加人得為訴訟行為。

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