World Intellectual Property Organization

Administrative Instructions under the Patent Cooperation Treaty

Section 204
Headings of the Parts of the Description

(a)  The headings of the parts of the description shall preferably be as follows:

(i) for matter referred to in Rule 5.1(a)(i), "Technical Field";

(ii) for matter referred to in Rule 5.1(a)(ii), "Background Art";

(iii) for matter referred to in Rule 5.1(a)(iii), "Disclosure of Invention” or “Summary of Invention”;

(iv) for matter referred to in Rule 5.1(a)(iv), "Brief Description of Drawings";

(v) for matter referred to in Rule 5.1(a)(v), "Best Mode for Carrying out the Invention," or, where appropriate, "Mode(s) for Carrying out the Invention" or “Description of Embodiments”;

(vi) for matter referred to in Rule 5.1(a)(vi), "Industrial Applicability";

(vii) for matter referred to in Rule 5.2(a), "Sequence Listing";

(viii) for matter referred to in Rule 5.2(b), "Sequence Listing Free Text."

(b)  The heading “Title of Invention” shall preferably precede the title of the invention. 

Explore WIPO