Enforcement Rules of the Patent Act Article 86

Where the applicant has a need to postpone the publication of a patent, he or she may apply to the Specific Patent Agency for the postponement thereof at the time of paying the patent certificate fee and the first year patent annuity fee. The requested term of postponement shall not exceed a period of six (6) months.
中文原文 專利法施行細則第86條
專利申請人有延緩公告專利之必要者,應於繳納證書費及第一年專利年費時,向專利專責機關申請延緩公告。
所請延緩之期限,不得逾六個月。

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