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