See ISPE Guidelines 4.31. See also GL/PCT‑EPO F‑II, 4.4.[Rule 9.1(iv); ]Source: http://www.epo.org/law-practice/legal-texts/html/guidelinespct/e/f_ii_7_4.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 PCT GL - F (not assigned)XGL-PCT F General Loading...XGL-PCT F II 4.4 Irrelevant matter Loading...XGL-PCT F II 7 Expressions, etc., not to be used Loading...PCT Implementing RulesXR.9 PCT Expressions, Etc., Not to Be UsedLoading...