Member states of the Patent Cooperation Treaty

1978
1978
2025
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in PCT
codenamedate bound by PCT

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Bahama Islands
BS
August 19, 2026
true
Yemen
YE
Western Sahara
EH
Venezuela (Bolivarian Republic of)
VE
Vanuatu
VU
Tonga
TO
Timor-Leste
TL
Taiwan
TW
Suriname
SR
South Sudan
SS
Somalia
SO
Solomon Islands
SB
Paraguay
PY
Palestine, State of
PS
Palau
PW
Pakistan
PK
Nepal
NP
Nauru
NR
Myanmar
MM
Micronesia (Federated States of)
FM
Marshall Islands
MH
Maldives
MV
Lebanon
LB
Kiribati
KI
Hong Kong
HK
Holy See
VA
Haiti
HT
Guyana
GY
Fiji
FJ
Ethiopia
ET
Eritrea
ER
Congo, Democratic Republic of the
CD
Burundi
BI
Bolivia (Plurinational State of)
BO
Bhutan
BT
Bangladesh
BD
Bahamas
BS
Argentina
AR
Antarctica
AQ
Andorra
AD
Afghanistan
AF
Uruguay
UY
January 7, 2025
true
Mauritius
MU
March 15, 2023
true
Cabo Verde
CV
July 6, 2022
true
Iraq
IQ
April 30, 2022
true
Jamaica
JM
February 10, 2022
true
Samoa
WS
January 2, 2020
true
Jordan
JO
June 9, 2017
true
Cambodia
KH
December 8, 2016
true
Djibouti
DJ
September 23, 2016
true
Kuwait
KW
September 9, 2016
true
Iran (Islamic Republic of)
IR
October 4, 2013
true
Saudi Arabia
SA
August 3, 2013
true
Panama
PA
September 7, 2012
true
Brunei Darussalam
BN
July 24, 2012
true
Rwanda
RW
August 31, 2011
true
Qatar
QA
August 3, 2011
true
Thailand
TH
December 24, 2009
true
Peru
PE
June 6, 2009
true
Chile
CL
June 2, 2009
true
Sao Tome and Principe
ST
July 3, 2008
true
Angola
AO
December 27, 2007
true
Dominican Republic
DO
May 28, 2007
true
Bahrain
BH
March 18, 2007
true
Malta
MT
March 1, 2007
true
Guatemala
GT
October 14, 2006
true
El Salvador
SV
August 17, 2006
true
Malaysia
MY
August 16, 2006
true
Honduras
HN
June 20, 2006
true
Lao People's Democratic Republic
LA
June 14, 2006
true
Montenegro
ME
June 3, 2006
true
Saint Kitts and Nevis
KN
October 27, 2005
true
Libya
LY
September 15, 2005
true
Nigeria
NG
May 8, 2005
true
Comoros
KM
April 3, 2005
true
San Marino
SM
December 14, 2004
true
Namibia
NA
January 1, 2004
true
Botswana
BW
October 30, 2003
true
Egypt
EG
September 6, 2003
true
Syrian Arab Republic
SY
June 26, 2003
true
Papua New Guinea
PG
June 14, 2003
true
Nicaragua
NI
March 6, 2003
true
Saint Vincent and the Grenadines
VC
August 6, 2002
true
Seychelles
SC
November 7, 2002
true
Tunisia
TN
December 10, 2001
true
Zambia
ZM
November 15, 2001
true
Oman
OM
October 26, 2001
true
Philippines
PH
August 17, 2001
true
Equatorial Guinea
GQ
July 17, 2001
true
Ecuador
EC
May 7, 2001
true
Colombia
CO
February 28, 2001
true
Belize
BZ
June 17, 2000
true
Mozambique
MZ
May 18, 2000
true
Antigua and Barbuda
AG
March 17, 2000
true
PCT National Phase applications (as well as standard national applications) are held but not yet processed due to the current lack of relevant law and/or regulations.
Algeria
DZ
March 8, 2000
true
Morocco
MA
October 8, 1999
true
United Republic of Tanzania
TZ
September 14, 1999
true
Dominica
DM
August 7, 1999
true
Costa Rica
CR
August 3, 1999
true
South Africa
ZA
March 16, 1999
true