Regulations Governing the Collection of Fees for Mediation of Contract Performance Disputes for Cases Concerning Promotion of Private Participation in Infrastructure Projects Article 9

Where a mediation application is rejected, no fee shall be collected.Where a mediation application has been submitted and the mediation fee has been paid, if the application is rejected upon procedural review, the full amount collected shall be refunded without interest. However, if the case has already entered substantive review and is thereafter found to be inadmissible, the mediation fee shall not be refunded.
中文原文 促進民間參與公共建設案件履約爭議調解收費辦法第9條
調解申請不予受理者,免予收費。
提出調解申請並已繳費者,如經程序審查不予受理,無息退還所繳調解費之全額。
但調解申請已進行實體審查始發現有不予受理之情形者,不予退還。

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