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Extension states
Between 1993 and 2009, the European Patent Organisation signed extension agreements with ten non-member states. Only the extension agreement with Bosnia and Herzegovina (BA) is still in force:
As regards the remaining nine countries (former extension states, current member states), please note that the extension system remains applicable to European and international patent applications filed before termination of the relevant agreement and to European patents granted on the basis of such applications.
The complete list of extension agreements concluded by the European Patent Organisation:
Slovenia
Official title: Agreement implementing Article 3(3) of the Co-operation Agreement between the Government of the Republic of Slovenia and the European Patent Organisation of 2 July 1993
Agreement signed on: 2.7.1993
Entry into force on: 1.3.1994
Termination of the Agreement: 30.11.2002
Lithuania
Official title: Agreement implementing Article 3(3) of the Co-operation Agreement between the Government of the Republic of Lithuania and the European Patent Organisation of 25 January 1994
Agreement signed on: 25.1.1994
Entry into force on: 5.7.1994
Termination of the Agreement: 30.11.2004
Latvia
Official title: Agreement implementing Article 3(3) of the Co-operation Agreement between the Government of the Republic of Latvia and the European Patent Organisation of 25 January 1994
Agreement signed on: 25.1.1994
Entry into force on: 1.5.1995
Termination of the Agreement: 30.6.2005
Romania
Official title: Agreement between the Government of Romania and the European Patent Organisation on co-operation in the field of patents (Co-operation Agreement)
Agreement signed on: 9.9.1994
Entry into force on: 15.10.1996
Termination of the Agreement: 28.2.2003
Croatia
Official title: Agreement between the Government of the Republic of Croatia and the European Patent Organisation on co-operation in the field of patents (Co-operation and Extension Agreement)
Agreement signed on: 16.6.2003
Entry into force on: 1.4.2004
Termination of the Agreement: 31.12.2007
Albania
Official title: Agreement between the Government of Albania and the European Patent Organisation on co-operation in the field of patents (Co-operation Agreement)
Agreement signed on: 3.11.1995
Entry into force on: 1.2.1996
Termination of the Agreement: 30.4.2010
North Macedonia
Official title: Agreement on co-operation in the field of patents between the Government of the Former Yugoslav Republic of Macedonia and the European Patent Organisation (Co-operation Agreement)
Agreement signed on: 24.6.1997
Entry into force on: 1.11.1997
Termination of the Agreement: 31.12.2008
Serbia
Official title: Agreement between the Federal Government of the Federal Republic of Yugoslavia and the European Patent Organisation on co-operation in the field of patents (Co-operation and Extension Agreement)
Agreement signed on: 26.11.2001
Entry into force on: 1.11.2004
Termination of the Agreement: 30.9.2010
Bosnia and Herzegovina
Official title: Agreement between Bosnia and Herzegovina and the European Patent Organisation on co-operation in the field of patents (Co-operation and Extension Agreement)
Agreement signed on: 1.12.2003
Entry into force on: 1.12.2004
Termination of the Agreement: still in force
Montenegro
Official title: Agreement between the Government of Montenegro and the European Patent Organisation on extension of European patents (Extension Agreement)
Agreement signed on: 13.2.2009
Entry into force on: 1.3.2010
Termination of the Agreement: 30.09.22