Trust Law Article 19

The right to apply for revocation of trust, as referred to in the preceding article, shall extinguish within one year from the time when the beneficiary becomes aware of the cause of the revocation or after ten years from the time of the disposal.
中文原文 信託法第19條
前條撤銷權,自受益人知有撤銷原因時起,一年間不行使而消滅。
自處分時起逾十年者,亦同。

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