Copyright Act Article 39

Where economic rights are the object of a pledge, unless otherwise stipulated at the time the pledge is created, the economic rights holder may exercise the economic rights to the work.
中文原文 著作權法第39條
以著作財產權為質權之標的物者,除設定時另有約定外,著作財產權人得行使其著作財產權。

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