Copyright Collective Management Organization Act Article 35

A CMO shall warrant its authorization to manage the rights whose exploitation it is licensing under its individual license agreements or blanket license agreements. When a user is clearly aware at the time of execution of an agreement that the CMO has no such authorization to perform management, the CMO is not liable to make such a warranty unless otherwise stipulated in the agreement.
中文原文 著作權集體管理團體條例第35條
集管團體對其個別授權契約或概括授權契約所授權利用之權利,應擔保確有管理之權利。
但利用人於契約成立時,明知集管團體無管理之權利者,除契約另有約定外,集管團體不負擔保之責。

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