e.g. http://ops2.few.vu.nl/1.5/patent?app_id=15a18100&app_key=528a8272f1cd961d215f318a0315dd3d&uri=http%3A%2F%2Frdf.ebi.ac.uk%2Fresource%2Fsurechembl%2Fpatent%2FUS-8877786-B2&_format=xml occursInPatentTitle and occursInPatentAbstract are missing