Patent Attorney Act Article 11

A patent attorney, after accepting representation, shall loyally engage in services as designated; a patent attorney shall be liable for damages and compensation to a client for losses incurred due to lack of due diligence or negligence.
中文原文 專利師法第11條
專利師受委任後,應忠實執行受任事務;如因懈怠或疏忽,致委任人受損害者,應負賠償責任。

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