Below is a list of PCT Countries/Regions, being those countries/regions that are currently signatories to the Patent Cooperation Treaty (PCT):

Designated/Elected OfficeChapter I
(under PCT Article 22)
Chapter II
(under PCT Article 39(1))
AEUnited Arab Emirates3030
AGAntigua and Barbuda13030
ALAlbania23131
AMArmenia33131
AOAngola13030
APAfrican Regional Intellectual Property Organization43131
ATAustria23030
AUAustralia3131
AZAzerbaijan33031
BABosnia and Herzegovina3434
BBBarbados3030
BGBulgaria23131
BHBahrain3030
BNBrunei Darussalam3030
BRBrazil3030
BWBotswana63131
BYBelarus33131
BZBelize 30  307
CACanada           30 (428)          30 (428)
CHSwitzerland2, 93030
CLChile  30  30 
CNChina          30 (32)8         30 (32)8
COColombia 3131
CRCosta Rica 3131
CUCuba 3030
CZCzechia23131
DEGermany23030
DJDjibouti3030
DKDenmark2 31 31
DMDominica13030
DODominican Republic 3030
DZAlgeria 3131
EAEurasian Patent Organization 3131
ECEcuador 3131
EEEstonia2 3131
EGEgypt 3030
EPEuropean Patent Organisation103131
ESSpain2 3030
FIFinland2 3131
GBUnited Kingdom2 3131
GDGrenada1 3030
GEGeorgia 3131
GHGhana6 3030
GMGambia6 3031
GTGuatemala 3030
HNHonduras3030
HRCroatia2  3131
HUHungary2 3131
IDIndonesia    315   315
ILIsrael 3030
INIndia 3131
IRIran (Islamic Republic of)3030
ISIceland2 3131
JPJapan 3030
KEKenya6 3030
KGKyrgyzstan3 3131
KNSaint Kitts and Nevis1 3030
KPDemocratic People’s Republic of Korea 3030
KRRepublic of Korea 3131
KWKuwait3030
KZKazakhstan3 3131
LALao People’s Democratic Republic1 3030
LCSaint Lucia1 3030
LKSri Lanka 3030
LRLiberia6 3031
LSLesotho6 3031
LULuxembourg2     201130
LYLibya1 3030
MAMorocco 3131
MDRepublic of Moldova3 3131
MEMontenegro1 3030
MGMadagascar 3030
MKThe former Yugoslav Republic of Macedonia2 3131
MNMongolia 3131
MWMalawi6 3030
MXMexico 3030
MYMalaysia 3030
MZMozambique6 3131
NANamibia6 3131
NGNigeria 3030
NINicaragua 3030
NONorway2 3131
NZNew Zealand 3131
OAAfrican Intellectual Property Organization123030
OMOman 3030
PAPanama3030
PEPeru  30 30 
PGPapua New Guinea 3131
PHPhilippines           30 (318)          30 (318)
PLPoland2 3030
PTPortugal2 3030
QAQatar3030
RORomania2 3030
RSSerbia2     30133013
RURussian Federation3 3131
RWRwanda1,63030
SASaudi Arabia3030
SCSeychelles 3131
SDSudan6 3030
SESweden2 3131
SGSingapore 30143014
SKSlovakia2 3131
SLSierra Leone6 3131
SMSan Marino2 3131
STSao Tome and Principe1,63030
SVEl Salvador 3030
SYSyrian Arab Republic 3131
THThailand 3030
TJTajikistan3 3031
TMTurkmenistan3 3031
TNTunisia1 3030
TRTurkey2          30 (338)         30 (338)
TTTrinidad and Tobago  3031
TZUnited Republic of Tanzania6     211131
UAUkraine 3131
UGUganda6    211131
USUnited States of America 3030
UZUzbekistan 3131
VCSaint Vincent and the Grenadines3131
VNViet Nam   3131
ZASouth Africa 3131
ZMZambia6 3030
ZWZimbabwe6 3031

Footnotes to the List of PCT Countries Above:

  1. In the absence of information from the Office concerned, the time limits shown are those which would normally apply under PCT Articles 22(1) and 39(1)(a).  If the Office decides to apply longer time limits, that information will be published in the PCT Newsletter.
  2. If designated/elected for a European patent, see EP as DO/EO for the applicable time limits.
  3. If designated/elected for a Eurasian patent, see EA as designated/elected Office (DO/EO) for the applicable time limits.
  4. This Office acts as DO/EO for the following State which does not act in the capacity of DO/EO:  SZ.
  5. This time limit may be extended provided that the applicant pays an additional fee for late entry into the national phase (see national phase for details).
  6. If designated/elected for an ARIPO patent, see AP as DO/EO for the applicable time limits.
  7. May be extended upon written request of the applicant.
  8. Time limit applicable if applicant pays an additional fee for late entry into the national phase (see national phase for details: CA, CN, PH, TR).
  9. This Office acts as DO/EO for the following State which does not act in the capacity of DO/EO:  LI.
  10. This Office acts as DO/EO for the following States which do not act in the capacity of DO/EO:  BE, CY, FR, GR, IE, IT, LT, LV, MC, MT, NL, SI.
  11. This Office has notified the International Bureau of the non-applicability of the 30-month time limit under PCT Article 22(1), as modified with effect from 1 April 2002 – it does not yet apply the 30-month time limit for entering the national phase.
  12. This Office acts as DO/EO for the following States which do not act in the capacity of DO/EO:  BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG.
  13. The time limit may be extended by 30 days if the applicant pays an additional fee for late entry into the national phase.
  14. The time limit may be extended by up to 18 months provided the applicant pays the prescribed fee (see national phase for details).

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