Patents having effect in most European states may be obtained either nationally, via national patent offices, or via a centralised patent prosecution process at the European Patent Office (EPO). The EPO is a public international organisation established by the European Patent Convention (EPC). The EPO is neither a European Union nor a Council of Europe institution. A patent granted by the EPO does not lead to a single European patent enforceable before one single court, but rather to a bundle of essentially independent national European patents enforceable before national courts according to different national legislations and procedures. Similarly, Eurasian patents are granted by the Eurasian Patent Office and become after grant independent national Eurasian patents enforceable before national courts.