European Patent Convention Contracting States
As from 1 July 2005, the European Patent Convention contracting states which may be designated in a new European Patent Application are:
| Austria | Estonia | Iceland | Luxembourg | Slovenia | Turkey |
| Belgium | Finland | Ireland | Malta | Spain | United Kingdom |
| Bulgaria | France | Italy | Monaco | Switzerland | |
| Cyprus | Germany | Latvia | Netherlands | Romania | |
| Czech Republic | Greece | Liechtenstein | Poland | Sweden | |
| Denmark | Hungary | Lithuania | Portugal | Slovakia |
Norway is set to become a European Patent Convention contracting state from 1 January 2008.
A European patent application can be extended to the following states:
| Albania | Bosnia & Herzegovina | Croatia | The former Yugoslav Republic of Macedonia | Serbia | |