Enforcement Rules of the Patent Act Article 2

Any application to be filed pursuant to the Act and these Enforcement Rules shall, except that to be filed by electronic means pursuant to Article 19 of the Act, be in written form and shall be affixed with the signature or seal of the applicant, or the signature or seal of the patent agent appointed by the applicant. The Specific Patent Agency may, as it deems necessary, request the applicant to submit the document(s) proving the identity of the natural or juristic person.Any application to be filed in written form pursuant to the Act and these Enforcement Rules shall use the written forms designated by the Specific Patent Agency; the formats and number of copies thereof shall be prescribed by the Specific Patent Agency.
中文原文 專利法施行細則第2條
依本法及本細則所為之申請,除依本法第十九條規定以電子方式為之者外,應以書面提出,並由申請人簽名或蓋章;委任有代理人者,得僅由代理人簽名或蓋章。
專利專責機關認有必要時,得通知申請人檢附身分證明或法人證明文件。
依本法及本細則所為之申請,以書面提出者,應使用專利專責機關指定之書表;其格式及份數,由專利專責機關定之。

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