Foundations Act Article 73

A foreign foundation which has been recognized shall apply to the court for registration of its establishment of principal office within 15 days after its receipt of the recognition document.
中文原文 財團法人法第73條
外國財團法人經認許者,應自收受認許文件後十五日內,向法院辦理事務所設立登記。

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