PCT Contracting States are:
| CODE |
COUNTRY |
DATE |
RO (application language-request language) |
| AE |
United Arab Emirates |
10/03/1999 |
IB (all-all) |
| AGAntigua and Barbuda17/03/2000 ? |
| AL |
Albania |
04/10/1995 |
AL (Albanian or English-English) – EP (English German French-English German French) |
| AM |
Armenia |
25/12/1991 |
AM (English-English) – EA (English Russian-English Russian) |
| AO |
Angola |
27/12/2007 |
IB (all-all) |
| AT |
Austria |
23/04/1979 |
AT (German French or English-German French or English) – EP (English German French-English German French) |
| AU |
Australia |
31/03/1980 |
AU (English or translation-English) |
| AZ |
Azerbaijan |
25/12/1995 |
AZ (English Azerbaijani Russian-English Russian) – EA (English Russian-English Russian) |
| BA |
Bosnia and Herzegovina |
07/09/1996 |
BA (English-English) |
| BB |
Barbados |
12/03/1985 |
IB (all-all) |
| BE |
Belgium |
14/12/1981 |
BE (German English French or Dutch-German English or French) – EP (English German French-English German French) |
| BF |
Burkina Faso |
21/03/1989 |
OA (English French-English French) |
| BG |
Bulgaria |
21/05/1984 |
BG (English Bulgarian Russian or translation-English Russian) – EP (English German French-English German French) |
| BH |
Bahrain |
18/03/2007 |
BH (English Arabic or translation-English Arabic) |
| BJ |
Benin |
26/02/1987 |
OA (English French-English French) |
| BN |
Brunei Darussalam |
24/07/2012 |
BN (English-English) |
| BR |
Brazil |
09/04/1978 |
BR (English Spanish Portuguese-English Spanish Portuguese) |
| BW |
Botswana |
30/10/2003 |
AP (English-?) – BW (English-English) |
| BY |
Belarus |
25/12/1991 |
BY (English Russian-English Russian) – EA (English Russian-English Russian) |
| BZ |
Belize |
17/06/2000 |
BZ (English-English) |
| CA |
Canada |
02/01/1990 |
CA (English French-English French) |
| CF |
Central African Republic |
24/01/1978 |
OA (English French-English French) |
| CG |
Congo |
24/01/1978 |
OA (English French-English French) |
| CH |
Switzerland |
24/01/1978 |
CH (German English French-German English French) – EP (English German French-English German French) |
| CI |
Côte d’Ivoire |
30/04/1991 |
OA (English French-English French) |
| CL |
Chile |
02/06/2009 |
CL (Spanish-Spanish) |
| CM |
Cameroon |
24/01/1978 |
OA (English French-English French) |
| CN |
China |
01/01/1994 |
CN (English Chinese-English Chinese) |
| CO |
Colombia |
28/02/2001 |
CO (Spanish-Spanish) |
| CR |
Costa Rica |
03/08/1999 |
CR (Spanish-?) |
| CU |
Cuba |
16/07/1996 |
CU (Spanish-Spanish) |
| CY |
Cyprus |
01/04/1998 |
CY (German French English Greek or translation-?) – EP (English German French-English German French) |
| CZ |
Czech Republic |
01/01/1993 |
CZ (German French English Czech or translation-German English French) – EP (English German French-English German French) |
| DE |
Germany |
24/01/1978 |
DE (German-German) – EP (English German French-English German French) |
| DK |
Denmark |
01/12/1978 |
DK (German English Danish French Icelandic Norwegian Swedish-German English French) – EP (English German French-English German French) |
| DM |
Dominica |
07/08/1999 |
? |
| DO |
Dominican Republic |
28/05/2007 |
DO (Spanish-?) |
| DZ |
Algeria |
08/03/2000 |
DZ (Arabic French-Arabic French) |
| EC |
Ecuador |
07/05/2001 |
EC (Spanish-Spanish) |
| EE |
Estonia |
24/08/1994 |
EE (German French-German French) – EP (English German French-English German French) |
| EG |
Egypt |
06/09/2003 |
EG (English Arabic-English Arabic) |
| ES |
Spain |
16/11/1989 |
EP (English German French-English German French) – ES (Spanish-Spanish) |
| FI |
Finland |
01/10/1980 |
EP (English German French-English German French) – FI (English Finnish Swedish-English) |
| FR |
France |
25/02/1978 |
EP (English German French-English German French) – FR (French-?) |
| GA |
Gabon |
24/01/1978 |
OA (English French-English French) |
| GB |
United Kingdom |
24/01/1978 |
EP (English German French-English German French) – GB (English Welsh-English) |
| GD |
Grenada |
22/09/1998 |
? |
| GEGeorgia25/12/1991GE (English Georgian Russian-English Russian) |
| GH |
Ghana |
26/02/1997 |
AP (English-?) – GH (English-?) |
| GM |
Gambia |
09/12/1997 |
AP (English-?) |
| GN |
Guinea |
27/05/1991 |
OA (English French-English French) |
| GQ |
Equatorial Guinea |
17/07/2001 |
OA (English French-English French) |
| GR |
Greece |
09/10/1990 |
EP (English German French-English German French) – GR (English German French-English German French) |
| GT |
Guatemala |
14/10/2006 |
GT (Spanish-Spanish) |
| GW |
Guinea-Bissau |
12/12/1997 |
OA (English French-English French) |
| HN |
Honduras |
20/06/2006 |
HN (Spanish-Spanish) |
| HR |
Croatia |
01/ |
07/1998
EP (English German French-English German French) – HR (English Croatian-English) |
| HU |
Hungary |
27/06/1980 |
EP (English German French-English German French) – HU (English German French Hungarian Russian-English German French Russian) |
| ID |
Indonesia |
05/09/1997 |
ID (English-English) |
| IE |
Ireland |
01/08/1992 |
EP (English German French-English German French) – IE (English-English) |
| IL |
Israel |
01/06/1996 |
IL (English-English) |
| IN |
India |
07/12/1998 |
IN (English or Hindi-English) |
| IR |
Islamic Republic of Iran |
04/10/2013 |
? |
| IS |
Iceland |
23/03/1995 |
EP (English German French-English German French) – IS (English Danish Norwegian Swedish-English) |
| IT |
Italy |
28/03/1985 |
EP (English German French-English German French) – IT (German English French Italian-English German French) |
| JP |
Japan |
01/10/1978 |
JP (English Japanese-English Japanese) |
| KE |
Kenya |
08/06/1994 |
AP (English-?) – KE (English-English) |
| KG |
Kyrgyzstan |
25/12/1991 |
EA (English Russian-English Russian) – KG (English Russian-English Russian) |
| KM |
Comoros |
03/04/2005 |
OA (English French-English French) |
| KN |
Saint Kitts and Nevis |
27/10/2005 |
? |
| KP |
Democratic People’s Republic of Korea |
08/07/1980 |
KP (English Korean French Russian-?) |
| KR |
Republic of Korea |
10/08/1984 |
KR (English Korean Japanese-English Korean Japanese) |
| KZ |
Kazakhstan |
25/12/1991 |
EA (English Russian-English Russian) – KZ (English Russian-English Russian) |
| LA |
Lao People’s Democratic Republic |
14/06/2006 |
IB (all-all) |
| LC |
Saint Lucia |
30/08/1996 |
IB (all-all) |
| LI |
Liechtenstein |
19/03/1980 |
CH (German English French-German English French) – EP (English German French-English German French) |
| LK |
Sri Lanka |
26/02/1982 |
IB (all-all) |
| LR |
Liberia |
27/08/1994 |
AP (English-?) – LR (English-?) |
| LS |
Lesotho |
21/10/1995 |
AP (English-?) – LS (English-English) |
| LT |
Lithuania |
05/07/1994 |
EP (English German French-English German French) – LT (English Lithuanian Russian-English Russian) |
| LU |
Luxembourg |
30/04/1978 |
EP (English German French-English German French) – LU (German French-?) |
| LV |
Latvia |
07/09/1993 |
EP (English German French-English German French) – LV (English German French Latvian Russian-English German French Russian) |
| LY |
Libya |
15/09/2005 |
LY (Arabic English-Arabic English) |
| MA |
Morocco |
08/10/1999 |
MA (French-French) |
| MC |
Monaco |
22/06/1979 |
EP (English German French-English German French) – MC (French-French) |
| MD |
Republic of Moldova |
25/12/1991 |
MD (German French Russian English-German French Russian English) |
| ME |
Montenegro |
03/06/2006 |
IB (all-all) |
| MG |
Madagascar |
24/01/1978 |
IB (all-all) |
| MK |
Former Yugoslav Republic of Macedonia |
10/08/1995 |
EP (English German French-English German French) – MK (English-English) |
| ML |
Mali |
19/10/1984 |
OA (English French-English French) |
| MN |
Mongolia |
27/05/1991 |
MN (English Russian-?) |
| MR |
Mauritania |
13/04/1983 |
OA (English French-English French) |
| MT |
Malta |
01/03/2007 |
EP (English German French-English German French) – MT (English-English) |
| MW |
Malawi |
24/01/1978 |
AP (English-?) – MW (English-English) |
| MX |
Mexico |
01/01/1995 |
MX (Spanish-Spanish) |
| MY |
Malaysia |
16/08/2006 |
MY (English-English) |
| MZ |
Mozambique |
18/05/2000 |
AP (English-?) |
| NA |
Namibia |
01/01/2004 |
AP (English-?) |
| NE |
Niger |
21/03/1993 |
OA (English French-English French) |
| NG |
Nigeria |
08/05/2005 |
IB (all-all) |
| NI |
Nicaragua |
06/03/2003 |
NI (Spanish-Spanish) |
| NL |
Netherlands |
10/07/1979 |
EP (English German French-English German French) – NL (English German French Dutch-English German French) |
| NO |
Norway |
01/01/1980 |
EP (English German French-English German French) – NO (English Norwegian-English) |
| NZ |
New Zealand |
01/12/1992 |
NZ (English-English) |
| OM |
Oman |
26/10/2001 |
IB (all-all) |
| PA |
Panama |
07/09/2012 |
PA (Spanish-Spanish) |
| PE |
Peru |
06/06/2009 |
PE (Spanish-Spanish) |
| PG |
Papua New Guinea |
14/06/2003 |
PG (English-English) |
| PH |
Philippines |
17/08/2001 |
PH (English Filipino-?) |
| PL |
Poland |
25/12/1990 |
EP (English German French-English German French) – PL (English German French-?) |
| PT |
Portugal |
24/11/1992 |
EP (English German French-English German French) – PT (English German French Portuguese-English German French Portuguese) |
| QA |
Qatar |
03/08/2011 |
? |
| RO |
Romania |
23/07/1979 |
EP (English German French-English German French) – RO (English German French Romanian Russian-?) |
| RS |
Serbia |
01/02/1997 |
EP (English German French-English German French) – RS (English-English) |
| RU |
Russian Federation |
29/03/1978 |
E
|
| A(anglais russe-anglais russe) |
A |
| RW |
Rwanda |
31/08/2011 |
AP (English-?) – RW(?-?) |
| SA |
Saudi Arabia |
03/08/2013 |
SA (English Arabic-English Arabic) |
| SC |
Seychelles |
07/11/2002 |
SC (English-English) |
| SD |
Sudan |
16/04/1984 |
AP (English-?) – SD (English-?) |
| SE |
Sweden |
17/05/1978 |
EP (English German French-English German French) – SE (English Danish Finnish Norwegian Swedish-English) |
| SG |
Singapore |
23/02/1995 |
SG (English-English) |
| SI |
Slovenia |
01/03/1994 |
EP (English German French-English German French) – SI (English German French Slovenian-English German French) |
| SK |
Slovakia |
01/01/1993 |
EP (English German French-English German French) – SK (English German French Slovak-English German French) |
| SL |
Sierra Leone |
17/06/1997 |
AP (English-?) |
| SM |
San Marino |
14/12/2004 |
EP (English German French-English German French) – SM (English French Spanish Italian-English) |
| SN |
Senegal |
24/01/1978 |
OA (English French-English French) |
| ST |
Sao Tome and Principe |
03/07/2008 |
IB (all-all) |
| SV |
El Salvador |
17/08/2006 |
SV (Spanish-?) |
| SY |
Syrian Arab Republic |
26/06/2003 |
SY (English Arabic French-English Arabic French) |
| SZ |
Eswatini |
20/09/1994 |
AP (English-?) |
| TD |
Chad |
24/01/1978 |
OA (English French-English French) |
| TG |
Togo |
24/01/1978 |
OA (English French-English French) |
| TH |
Thailand |
24/12/2009 |
TH (English Thai-English) |
| TJ |
Tajikistan |
25/12/1991 |
EA (English Russian-English Russian) -TJ (English Russian-?) |
| TM |
Turkmenistan |
25/12/1991 |
EA (English Russian-English Russian) – TM (English Russian-?) |
| TN |
Tunisia |
10/12/2001 |
TN (Arabic English French-?) |
| TR |
Turkey |
01/01/1996 |
EP (English German French-English German French) – TR (English German French Turkish-English German French) |
| TT |
Trinidad and Tobago |
10/03/1994 |
TT (English-English) |
| TZ |
United Republic of Tanzania |
14/09/1999 |
AP |
| UA |
Ukraine |
25/12/1991 |
UA (English Russian-English Russian) |
| UG |
Uganda |
09/02/1995 |
AP (English-?) |
| US |
United States of America |
24/01/1978 |
US (English-English) |
| UZ |
Uzbekistan |
25/12/1991 |
UZ (English Russian-Russian) |
| VC |
Saint Vincent and the Grenadines |
06/08/2002 |
IB (all-all) |
| VN |
Vietnam |
10/03/1993 |
VN (English Russian-English-Russian) |
| ZA |
South Africa |
16/03/1999 |
ZA (English-English) |
| ZM |
Zambia |
15/11/2001 |
AP (English-?) – ZM (English-English) |
| ZW |
Zimbabwe |
11/06/1997 |
AP (English-?) – ZW (English-?) |
Note: there are certain additional ROs in addition to the national ROs listed above.
- AP: African Regional Intellectual Property Organization,
- EP: European Patent Office,
- EA: Eurasian Patent Organization,
- OA: African Intellectual Property Organization,
- XN: Nordic Patent Institute.
