Where an actor still performs an act of agency without a power of attorney, beyond his or her power of attorney, or after his or her power of attorney terminates, the act shall not be binding on the principal without the principal's ratification. The opposite party may, by a notice, urge the principal to ratify within 30 days from the date of receipt of the notice. If the principal fails to respond, ratification shall be deemed denied. Before the ratification of the act, the bona fide opposite party shall be entitled to revoke the act. The revocation shall be made by a notice. 行为人没有代理权、超越代理权或者代理权终止后，仍然实施代理行为，未经被代理⼈人追认的，对被代理人不发生效力。 相对人可以催告被代理人自收到通知之日起三⼗日内予以追认。被代理⼈未作表示的，视为拒绝追认。⾏为⼈实施的⾏为被追认前，善意相对人有撤销的权利。撤销应当以通知的方式作出。