Administrative Litigation Act Article 81
The administrative court may, on motion or on its own initiative, order service upon a party to be effectuated by constructive notice in the following circumstances:1. If the place where service shall be made is unknown;2. Where service effectuated in the domicile or residence or office of a person who enjoys immunity is ineffective;3. Where service which should be effectuated in a foreign country cannot be effectuated in accordance with the provision of Article 77, or it is foreseeable to be futile even if it has been so effectuated.
中文原文 行政訴訟法第81條
行政法院對於當事人之送達，有下列情形之一者，得依聲請或依職權為公示送達：
一、應為送達之處所不明。
二、於有治外法權人住居所或事務所為送達而無效。
三、於外國為送達，不能依第七十七條之規定辦理或預知雖依該條規定辦理而無效。
一、應為送達之處所不明。
二、於有治外法權人住居所或事務所為送達而無效。
三、於外國為送達，不能依第七十七條之規定辦理或預知雖依該條規定辦理而無效。