The Least Developed Countries: Accession to Patent Cooperation Treaty (PCT)

(as of December 2005):  24 countries

Countries

 

Africa:

Date of Accession

Benin

February 26, 1987

Burkina Faso

March 21, 1989

Central African Republic

January 24, 1978

Chad

January 24, 1978

Comoros

April 3, 2005

Equatorial Guinea

July 17, 2001

Gambia

December 9, 1997

Guinea

May 27, 1991

Guinea-Bissau

December 12, 1997

Lesotho

October 21, 1995

Liberia

August 27, 1994

Madagascar

January 24, 1978

Malawi

January 24, 1978

Mali

October 19, 1984

Mauritania

April 13, 1983

Mozambique

May 18, 2000

Niger

March 21, 1993

Senegal

January 24, 1978

Sierra Leone

June 17, 1997

Togo

January 24, 1978

Uganda

February 9, 1995

United Republic of Tanzania

September 14, 1999

Zambia

November 15, 2001

Arab Region:

 

Sudan

April 16, 1984

Least Developed Countries