1. Opinion given in the IPER (Form 409) 2. Completing the IPER 3. Positive or negative IPER 4. Rectification of the IPER Source: http://www.epo.org/law-practice/legal-texts/html/guidelinespct/e/c_viii.htmDate retrieved: 17 May 20217 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 - C Procedureal Aspects Chapter IIXGL-PCT C General remark Loading...XGL-PCT C IV 1 General procedure Loading...XGL-PCT C VIII 1 Opinion given in the IPER (Form 409) Loading...XGL-PCT C VIII 2 Completing the IPER Loading...XGL-PCT C VIII 3 Positive or negative IPER Loading...XGL-PCT C VIII 4 Rectification of the IPER Loading...own subtype: guidelines PCTXGL-PCT INDEX of Contents Loading...