Enforcement Rules of the Patent Act Article 39

Prior to examination decision being rendered , any person considering that the claimed inventions shall not be granted may submit observations to the Specific Patent Agency, along with reasons and document(s) of proof.
中文原文 專利法施行細則第39條
發明專利申請案審定前,任何人認該發明應不予專利時,得向專利專責機關陳述意見,並得附具理由及相關證明文件。

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