4.1 Composition Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/b_ix_4.htmDate retrieved: 17 May 20213 references found. Click X to load a reference inside the current page, click on the title to open in a new page.EPO Guidelines - B SearchXGL B Purpose of Part B Loading...XGL B IX – Search documentation Loading...XGL B IX 4.1 Composition Loading...