See ISPE Guidelines 13.16-ISPE Guidelines 13.18.Source: http://www.epo.org/law-practice/legal-texts/html/guidelinespct/e/g_vii_10_3.htmDate retrieved: 17 May 20212 references found. Click X to load a reference inside the current page, click on the title to open in a new page.EPO PCT GL - G PatentabilityXGL-PCT G Loading...XGL-PCT G VII 10 Secondary indicators Loading...