Administrative Procedure Act Article 117

The authority rendering an unlawful administrative disposition may withdraw ex officio the disposition in whole or in part upon the lapse of the statutory period of remedy; the same may be done by its superior authority; provided, however, that no withdrawal may be made under any of the following circumstances:1. Where withdrawal will result in serious jeopardy to the public interest; 2. Where the beneficiary has not done any of the acts specified in article 119 hereof, making him deserves no protection of his reliance, and the benefit granted him by the administrative disposition because of his reliance is obviously greater than the public interest intended to be protected by way of withdrawal of the disposition.
中文原文 行政程序法第117條
違法行政處分於法定救濟期間經過後,原處分機關得依職權為全部或一部之撤銷;其上級機關,亦得為之。
但有下列各款情形之一者,不得撤銷︰一、撤銷對公益有重大危害者。
二、受益人無第一百十九條所列信賴不值得保護之情形,而信賴授予利益之行政處分,其信賴利益顯然大於撤銷所欲維護之公益者。

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