PCT Contracting States

The PCT Contracting States are:

CODECOUNTRYDATEDRO (language request-language query)
AEUnited Arab Emirates10/03/1999IB (all)
AGAntigua and Barbuda17/03/2000?
ALAlbania04/10/1995AL (Albanian or English-English) - EP (English German French-English German French)
AMArmenia25/12/1991AM (English-English) - EA (Russian English-Russian English)
AOangola27/12/2007IB (all)
ATAustria23/04/1979AT (German French or English-German French or English) - EP (English German French-English German French)
TOAustralia31/03/1980AU (English or English translation)
AZAzerbaijan25/12/1995AZ (Russian-Russian English-Russian) - EA (Russian-English Russian)
BABosnia and Herzegovina07/09/1996BA (English to English)
BBBarbados12/03/1985IB (all)
BEBelgium14/12/1981BE (German English French or Dutch-German English or French) - EP (English German French-English German French)
BFBurkina Faso21/03/1989OA (English French-English French)
BGBulgaria21/05/1984BG (Russian Bulgarian English or Russian trad-English) - EP (English German French-English German French)
BHBahrain18/03/2007BH (Arabic English or trad-Arabic English)
BJBenign26/02/1987OA (English French-English French)
BNBrunei Darussalam24/07/2012BN (English-French)
BRBrazil09/04/1978BR (English Spanish Portuguese-English Spanish Portuguese)
BWbotswana30/10/2003AP (English-?) - BW (English-French)
BYBelarus25/12/1991BY (Russian-English Russian English) - EA (Russian English-Russian English)
BZbelize17/06/2000BZ (English-French)
ITCanada02/01/1990CA (English French-English French)
CFCentral African Republic24/01/1978OA (English French-English French)
CGCongo24/01/1978OA (English French-English French)
CHSwiss24/01/1978CH (German English French-German English French) - EP (English German French-English German French)
THISIvory Coast30/04/1991OA (English French-English French)
CLChile02/06/2009CL (Spanish-Spanish)
CMCameroon24/01/1978OA (English French-English French)
CNChina01/01/1994CN (Chinese English to Chinese English)
COColombia28/02/2001CO (Spanish-Spanish)
CRCosta Rica03/08/1999CR (Spanish-?)
CUCuba16/07/1996CU (Spanish-Spanish)
CYCyprus01/04/1998CY (german french english greek or trad-?) - EP (english german french-english german french)
CZCzech republic01/01/1993CZ (german french english czech or trad-german english french) - - EP (english german french-english german french)
OFGermany24/01/1978DE (German-German) - EP (English German French-English German French)
DKDenmark01/12/1978DK (German English Danish French Icelandic Norwegian Swedish-German English French) - EP (English German French-English German French)
DMDominica07/08/1999?
DODominican Republic28/05/2007DO (spanish-?)
DZAlgeria08/03/2000DZ (Arabic French-Arabic French)
ECEcuador07/05/2001EC (Spanish-Spanish)
EEEstonia24/08/1994EE (German French-German French) - EP (English German French-English German French)
EGEgypt06/09/2003EG (Arabic-English Arabic)
ESSpain16/11/1989EP (English German French-English German French) - ES (Spanish-Spanish)
FIFinland01/10/1980EP (English German French-English German French) - FI (Finnish English Swedish-English)
ENla France25/02/1978EP (english german french-english german french) - FR (french-?)
GAGabon24/01/1978OA (English French-English French)
GBUnited Kingdom24/01/1978EP (English German French-English German French) - GB (English Welsh-English)
GDGrenade22/09/1998?
GEGeorgia25/12/1991GE (English Georgian Cunning-Russian English)
GHGhana26/02/1997AP (English-?) - GH (English-?)
GMGambia09/12/1997AP (English-?)
GNGuinea27/05/1991OA (English French-English French)
GQEquatorial Guinea17/07/2001OA (English French-English French)
GRGreece09/10/1990EP (English German French-English German French) - GR (English German French-English German French)
GTGuatemala14/10/2006GT (Spanish-Spanish)
GWGuinea-Bissau12/12/1997OA (English French-English French)
HNHonduras20/06/2006HN (Spanish-Spanish)
HRCroatia01/07/1998EP (English German French-English German French) - HR (Croatian-English)
HUHungary27/06/1980EP (english german french-english german french) - HU (english german french hungarian russian-english german french russian)
IDIndonesia05/09/1997ID (English-French)
IEIreland01/08/1992EP (English German French-English German French) - IE (English-French)
HEIsrael01/06/1996IL (English-French)
INIndia07/12/1998IN (English or Hindi-English)
IRIslamic Republic of Iran04/10/2013?
ISIceland23/03/1995EP (English German French-English German French) - IS (Danish English Norwegian Swedish-English)
ITItaly28/03/1985EP (English German French-English German French) - IT (German English French Italian-English German French)
JPJapan01/10/1978JP (Japanese English to Japanese English)
KEKenya08/06/1994AP (English-?) - KE (English-French)
KGKyrgyzstan25/12/1991EA (Russian-English Russian English) - KG (Russian-English Russian English)
KMComoros03/04/2005OA (English French-English French)
KNSaint Kitts and Nevis27/10/2005?
KPDemocratic People's Republic of Korea08/07/1980KP (English Korean French Russian-?)
KRRepublic of Korea10/08/1984KR (Japanese Korean Japanese-English Korean Japanese)
KZkazakhstan25/12/1991EA (English Russian-Russian English) - KZ (Russian English-Russian English)
THELao People's Democratic Republic14/06/2006IB (all)
LCSaint Lucia30/08/1996IB (all)
LIliechtenstein19/03/1980CH (German English French-German English French) - EP (English German French-English German French)
LKSri Lanka26/02/1982IB (all)
LRLiberia27/08/1994AP (English-?) - LR (English-?)
LSLesotho21/10/1995AP (English-?) - LS (English-French)
LTLithuania05/07/1994EP (English German French-English German French) - LT (Lithuanian English Russian-Russian English)
READluxembourg30/04/1978EP (English German French-English German French) - LU (German French-?)
LVLatvia07/09/1993EP (English German French-English German French) - LV (English German French Latvian Russian-English German French Russian)
LYLibya15/09/2005LY (Arabic English to Arabic English)
MYMorocco08/10/1999MA (French-French)
MCMonaco22/06/1979EP (English German French-English German French) - MC (French-French)
MDRepublic of Moldova25/12/1991MD (German French Russian English-German French Russian English)
MEMontenegro03/06/2006IB (all)
MGMadagascar24/01/1978IB (all)
MKFormer Yugoslav Republic of Macedonia10/08/1995EP (English German French-English German French) - MK (English-English)
MLMali19/10/1984OA (English French-English French)
MNMongolia27/05/1991MN (Russian English-?)
MRMauritania13/04/1983OA (English French-English French)
MTMalta01/03/2007EP (English German French-English German French) - MT (English-French)
MWMalawi24/01/1978AP (English-?) - MW (English-French)
MXMexico01/01/1995MX (Spanish-Spanish)
MYMalaysia16/08/2006MY (English-English)
MZmozambique18/05/2000AP (English-?)
N / ANamibia01/01/2004AP (English-?)
BORNNiger21/03/1993OA (English French-English French)
NGNigeria08/05/2005IB (all-all)
ORNicaragua06/03/2003NI (Spanish-Spanish)
NLNetherlands10/07/1979EP (English German French-English German French) - NL (English German French Dutch-English German French)
NONorway01/01/1980EP (english german french-english german french) - NO (english norwegian-english)
NZNew Zealand01/12/1992NZ (English-French)
OMOman26/10/2001IB (all-all)
PAPanama07/09/2012PA (Spanish-Spanish)
PEPeru06/06/2009EP (Spanish-Spanish)
PGPapua New Guinea14/06/2003PG (English-French)
PHphilippines17/08/2001PH (Filipino English-?)
PLPoland25/12/1990EP (English German French-English German French) - PL (English German French-?)
PTPortugal24/11/1992EP (English German French-English German French) - PT (English German French Portuguese-English German French Portuguese)
QAQatar03/08/2011?
RORomania23/07/1979EP (English German French-English German French) - RO (English German French Romanian Russian-?)
RSSerbia01/02/1997EP (English German French-English German French) - RS (English-French)
UKRussian Federation29/03/1978EA (English Russian-Russian English) - RU (Russian English-Russian English)
RWRwanda31/08/2011AP (English-?) - RW (? -?)
HERSaudi Arabia03/08/2013SA (Arabic-English Arabic)
SCseychelles07/11/2002SC (English-French)
SDSudan16/04/1984AP (English-?) - SD (English-?)
SESweden17/05/1978EP (English German French-English German French) - SE (Danish English Finnish Norwegian Swedish-English)
SGSingapore23/02/1995SG (English-French)
IFSlovenia01/03/1994EP (English German French-English German French) - SI (English German French Slovenian-English German French)
SKSlovakia01/01/1993EP (English German French-English German French) - SK (English German French Slovak-English German French)
SLSierra Leone17/06/1997AP (English-?)
SMSan Marino14/12/2004EP (English German French-English German French) - SM (English French Spanish Italian-English)
SNSenegal24/01/1978OA (English French-English French)
STSao Tome and Principe03/07/2008IB (all-all)
SVEl Salvador17/08/2006SV (Spanish-?)
SYSyrian Arab Republic26/06/2003SY (English Arabic French-English Arabic French)
SZswaziland20/09/1994AP (English-?)
TDChad24/01/1978OA (English French-English French)
TGTogo24/01/1978OA (English French-English French)
THThailand24/12/2009TH (Thai-English English)
TJTajikistan25/12/1991EA (English Russian-Russian English) -TJ (Russian English-?)
TMTurkmenistan25/12/1991EA (English Russian-Russian English) - TM (Russian English-?)
TNTunisia10/12/2001TN (Arabic French English-?)
TRTurkey01/01/1996EP (English German French-English German French) - TR (English German French Turkish-English German French)
TTTrinidad and Tobago10/03/1994TT (English-French)
TZUnited Republic of Tanzania14/09/1999AP
UAUkraine25/12/1991UA (Russian English to Russian English)
U Guganda09/02/1995AP (English-?)
USUnited States of America24/01/1978US (English-English)
UZUzbekistan25/12/1991UZ (Russian-Russian English)
VCSaint Vincent and the Grenadines06/08/2002IB (all-all)
VNVietnam10/03/1993VN (Russian-English-Russian English)
ZASouth Africa16/03/1999ZA (English-French)
ZMZambia15/11/2001AP (English-?) - ZM (English-French)
ZWZimbabwe11/06/1997AP (English-?) - ZW (English-?)

Note : There are some additional ROs in addition to the national ROs mentioned below.

  • AP: African Regional Intellectual Property Organization,
  • EP: European Patent Office,
  • EA: Eurasian Patent Office,
  • OA: African Intellectual Property Organization,
  • XN: Nordic Institute of Patents.

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