Enforcement Rules of the Patent Act Article 21
An abstract shall concisely state the disclosure of the invention, and be limited to the technical problem(s) it intends to solve, the technical solution adopted to solve the problem(s), and the principal use of the invention; in principle, the text of abstract is not to exceed 250 words; for an invention involving chemical formula, its abstract shall disclose the formula that can best characterize the inventive feature(s).An abstract may not contain any commercial advertisement wording.For an abstract failing to comply with the preceding two paragraphs, the Specific Patent Agency may notify the applicant to make an amendment within a specified time limit, or notify the applicant of the amendment being made ex officio.The applicant shall designate a representative drawing that can best characterize the technical feature(s) of the invention and list the primary reference sign(s) in the representative drawing accompanied by brief description(s).In case of failure to designate a representative drawing or inappropriate designation of a representative drawing, the Specific Patent Agency may notify the applicant to complete the requirements within a specified time limit, or notify the applicant of the designation or deletion being made ex officio.
中文原文 專利法施行細則第21條
摘要，應簡要敘明發明所揭露之內容，並以所欲解決之問題、解決問題之技術手段及主要用途為限；其字數，以不超過二百五十字為原則；有化學式者，應揭示最能顯示發明特徵之化學式。
摘要，不得記載商業性宣傳用語。
摘要不符合前二項規定者，專利專責機關得通知申請人限期修正，或依職權修正後通知申請人。
申請人應指定最能代表該發明技術特徵之圖為代表圖，並列出其主要符號，簡要加以說明。
未依前項規定指定或指定之代表圖不適當者，專利專責機關得通知申請人限期補正，或依職權指定或刪除後通知申請人。
摘要，不得記載商業性宣傳用語。
摘要不符合前二項規定者，專利專責機關得通知申請人限期修正，或依職權修正後通知申請人。
申請人應指定最能代表該發明技術特徵之圖為代表圖，並列出其主要符號，簡要加以說明。
未依前項規定指定或指定之代表圖不適當者，專利專責機關得通知申請人限期補正，或依職權指定或刪除後通知申請人。