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