2.1 PCT minimum documentation 2.2 Unpublished patent applications 2.3 Search reports 2.4 Patent family system Source: http://www.epo.org/law-practice/legal-texts/html/guidelines/e/b_ix_2.htmDate retrieved: 17 May 20216 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B Loading...XGL B IX – Search documentation Loading...XGL B IX 2.1 PCT minimum documentation Loading...XGL B IX 2.2 Unpublished patent applications Loading...XGL B IX 2.3 Search reports Loading...XGL B IX 2.4 Patent family system Loading...