Rule 52 – Declaration of priority Rule 53 – Priority documents Rule 54 – Issuing priority documents Source: http://www.epo.org/law-practice/legal-texts/html/epc/2016/e/rciii_iv.htmlDate 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.EPC Implementing RulesX Part III Implementing Regulations to Part III of the ConventionLoading...XR.52 EPC Declaration of priorityLoading...XR.53 EPC Priority documentsLoading...XR.54 EPC Issuing priority documentsLoading...