3.1 Composition 3.2 Duties Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/e_xiii_3.htmDate retrieved: 17 May 20214 references found. Click X to load a reference inside the current page, click on the title to open in a new page.EPO Guidelines - E General Procedural MattersXGL E Communications Loading...XGL E XIII – Request from a national court for a technical opinion concerning a European patent Loading...XGL E XIII 3.1 Composition Loading...XGL E XIII 3.2 Duties Loading...