The PCT Applicant's Guide
(Last updated 27 July 2017)
The PCT Applicant’s Guide is updated almost every week with information received by the International Bureau. Users of the Guide who wish to see when any individual page of the Guide was last updated, can check the date printed at the foot of that page. Each page in the Guide is dated in this way.
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International Phase Introduction  |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| AE | United Arab Emirates | X | IB | - | - | - | X | - | X | AE |
| AG | Antigua and Barbuda | X | X | - | - | - | X | - | X | AG |
| AL | Albania | X | X | - | - | - | X | X | X | AL |
| AM | Armenia | X | X | - | - | - | X | - | X | AM |
| AO | Angola | X | IB | - | - | - | X | - | X | AO |
| AP | African Regional Intellectual Property Organization | X | X | - | - | - | X | X | X | AP |
| AT | Austria | X | X | X | X | X | X | X | X | AT |
| AU | Australia | X | X | X | - | X | X | X | X | AU |
| AZ | Azerbaijan | X | X | - | - | - | X | - | X | AZ |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| BA | Bosnia & Herzegovina | X | X | - | - | - | X | X | X | BA |
| BB | Barbados | X | IB | - | - | - | X | - | X | BB |
| BE | Belgium | X | X | - | - | - | X | - | EP | BE |
| BF | Burkina Faso | X | OA | - | - | - | X | - | OA | BF |
| BG | Bulgaria | X | X | - | - | - | X | X | X | BG |
| BH | Bahrain | X | X | - | - | - | X | - | X | BH |
| BJ | Benin | X | OA | - | - | - | X | - | OA | BJ |
| BN | Brunei Darussalam | X | X | - | - | - | X | X | X | BN |
| BR | Brazil | X | X | X | X | X | X | X | BR | |
| BW | Botswana | X | X | - | - | - | X | - | X | BW |
| BY | Belarus | X | X | - | - | - | X | X | X | BY |
| BZ | Belize | X | X | - | - | - | X | - | X | BZ |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
|
Two-Letter Code plus Country (Annex A
) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| CA | Canada | X | X | X | - | X | X | X | X | CA |
| CF | Central African Republic | X | OA | - | - | - | X | - | OA | CF |
| CG | Congo | X | OA | - | - | - | X | - | OA | CG |
| CH | Switzerland | X | X | - | - | - | X | X | X | CH |
| CI | Côte d'Ivoire | X | OA | - | - | - | X | - | OA | CI |
| CL | Chile | X | X | X | - | X | X | X | X | CL |
| CM | Cameroon | X | OA | - | - | - | X | - | OA | CM |
| CN | China | X | X | X | - | X | X | X | X | CN |
| CO | Colombia | X | X | - | - | - | X | X | X | CO |
| CR | Costa Rica | X | X | - | - | - | X | - | X | CR |
| CU | Cuba | X | X | - | - | - | X | X | X | CU |
| CY | Cyprus | X | X | - | - | - | X | - | EP | CY |
| CZ | Czechia | X | X | - | - | - | X | X | X | CZ |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| DE | Germany | X | X | - | - | - | X | X | X | DE |
| DJ | Djibouti | X | X | - | - | - | X | X | X | DJ |
| DK | Denmark | X | X | - | - | - | X | X | X | DK |
| DM | Dominica | X | X | - | - | - | X | - | X | DM |
| DO | Dominican Republic | X | X | - | - | - | X | - | X | DO |
| DZ | Algeria | X | X | - | - | - | X | - | X | DZ |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| EA | Eurasian Patent Organization | X | X | - | - | - | X | X | X | EA |
| EC | Ecuador | X | X | - | - | - | X | X | X | EC |
| EE | Estonia | X | X | - | - | - | X | - | X | EE |
| EG | Egypt | X | X | X | - | X | X | - | X | EG |
| EP | European Patent Organisation | X | X | X | X | X | X | X | X | EP |
| ES | Spain | X | X | X | - | X | X | X | X | ES |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| FI | Finland | X | X | X | X | X | X | X | X | FI |
| FR | France | X | X | - | - | - | X | - | EP | FR |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| GA | Gabon | X | OA | - | - | - | X | - | OA | GA |
| GB | United Kingdom | X | X | - | - | - | X | X | X | GB |
| GD | Grenada | X | X | - | - | - | X | - | X | GD |
| GE | Georgia | X | X | - | - | - | X | X | X | GE |
| GH | Ghana | X | X | - | - | - | X | - | X | GH |
| GM | Gambia | X | AP | - | - | - | X | - | X | GM |
| GN | Guinea | X | OA | - | - | - | X | - | OA | GN |
| GQ | Equatorial Guinea | X | OA | - | - | - | X | - | OA | GQ |
| GR | Greece | X | X | - | - | - | X | - | EP | GR |
| GT | Guatemala | X | X | - | - | - | X | X | X | GT |
| GW | Guinea-Bissau | X | OA | - | - | - | X | - | OA | GW |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| HN | Honduras | X | X | - | - | - | X | X | X | HN |
| HR | Croatia | X | X | - | - | - | X | X | X | HR |
| HU | Hungary | X | X | - | - | - | X | X | X | HU |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| IB | World Intellectual Property Organization | X | X | - | - | - | X | - | - | IB |
| ID | Indonesia | X | X | - | - | - | X | X | X | ID |
| IE | Ireland | X | X | - | - | - | X | - | EP | IE |
| IL | Israel | X | X | X | - | X | X | X | X | IL |
| IN | India | X | X | X | - | X | X | X | X | IN |
| IR | Iran (Islamic Republic of) | X | X | - | - | - | X | - | X | IR |
| IS | Iceland | X | X | - | - | - | X | X | X | IS |
| IT | Italy | X | X | - | - | - | X | - | EP | IT |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| JO | Jordan | X | X | - | - | - | X | X | X | JO |
| JP | Japan | X | X | X | - | X | X | X | X | JP |
|
International Phase Introduction |
National Phase Introduction
| |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| KE | Kenya | X | X | - | - | - | X | X | X | KE |
| KG | Kyrgyzstan | X | X | - | - | - | X | - | X | KG |
| KH | Cambodia | X | X | - | - | - | X | - | X | KH |
| KM | Comoros | X | OA | - | - | - | X | - | OA | KM |
| KN | Saint Kitts and Nevis | X | X | - | - | - | X | - | X | KN |
| KP | Democratic People's Republic of Korea | X | X | - | - | - | X | - | X | KP |
| KR | Republic of Korea | X | X | X | - | X | X | X | X | KR |
| KW | Kuwait | X | IB | - | - | - | X | - | X | KW |
| KZ | Kazakhstan | X | X | - | - | - | X | X | X | KZ |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| LA | Lao People's Democratic Republic | X | IB | - | - | - | X | - | X | LA |
| LC | Saint Lucia | X | IB | - | - | - | X | - | X | LC |
| LI | Liechtenstein | X | CH | - | - | - | X | - | CH | LI |
| LK | Sri Lanka | X | IB | - | - | - | X | - | X | LK |
| LR | Liberia | X | X | - | - | - | X | - | X | LR |
| LS | Lesotho | X | X | - | - | - | X | - | X | LS |
| LT | Lithuania | X | X | - | - | - | X | X | EP | LT |
| LU | Luxembourg | X | X | - | - | - | X | X | X | LU |
| LV | Latvia | X | X | - | - | - | X | X | EP | LV |
| LY | Libya | X | X | - | - | - | X | - | X | LY |
|
International Phase Introduction |
National Phase Introduction
| |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| MA | Morocco | X | X | - | - | - | X | X | X | MA |
| MC | Monaco | X | X | - | - | - | X | - | EP | MC |
| MD | Republic of Moldova | X | X | - | - | - | X | X | X | MD |
| ME | Montenegro | X | X | - | - | - | X | - | X | ME |
| MG | Madagascar | X | IB | - | - | - | X | - | X | MG |
| MK | The former Yugoslav Republic of Macedonia | X | X | - | - | - | X | X | X | MK |
| ML | Mali | X | OA | - | - | - | X | - | OA | ML |
| MN | Mongolia | X | X | - | - | - | X | - | X | MN |
| MR | Mauritania | X | OA | - | - | - | X | - | OA | MR |
| MT | Malta | X | X | - | - | - | X | - | EP | MT |
| MW | Malawi | X | X | - | - | - | X | - | X | MW |
| MX | Mexico | X | X | - | - | - | X | X | X | MX |
| MY | Malaysia | X | X | - | - | - | X | - | X | MY |
| MZ | Mozambique | X | AP | - | - | - | X | - | X | MZ |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| NA | Namibia | X | AP | - | - | - | X | - | X | NA |
| NE | Niger | X | OA | - | - | - | X | - | OA | NE |
| NG | Nigeria | X | IB | - | - | - | X | - | X | NG |
| NI | Nicaragua | X | X | - | - | - | X | X | X | NI |
| NL | Netherlands | X | X | - | - | - | X | - | EP | NL |
| NO | Norway | X | X | - | - | - | X | X | X | NO |
| NZ | New Zealand | X | X | - | - | - | X | - | X | NZ |
|
International Phase Introduction |
National Phase Introduction
| |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| OA | African Intellectual Property Organization | X | X | - | - | - | X | - | X | OA |
| OM | Oman | X | X | - | - | - | X | X | X | OM |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| PA | Panama | X | X | - | - | - | X | X | X | PA |
| PE | Peru | X | X | - | - | - | X | X | X | PE |
| PG | Papua New Guinea | X | X | - | - | - | X | - | X | PG |
| PH | Philippines | X | X | - | - | - | X | X | X | PH |
| PL | Poland | X | X | - | - | - | X | X | X | PL |
| PT | Portugal | X | X | - | - | - | X | X | X | PT |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| QA | Qatar | X | X | - | - | - | X | X | X | QA |
|
International Phase Introduction |
National Phase Introduction
| |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| RO | Romania | X | X | - | - | - | X | X | X | RO |
| RS | Serbia | X | X | - | - | - | X | X | X | RS |
| RU | Russian Federation | X | X | X | X | X | X | X | X | RU |
| RW | Rwanda | X | X | - | - | - | X | - | X | RW |
|
International Phase Introduction |
National Phase Introduction
| |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| SA | Saudi Arabia | X | X | - | - | - | X | - | X | SA |
| SC | Seychelles | X | X | - | - | - | X | - | X | SC |
| SD | Sudan | X | X | - | - | - | X | - | X | SD |
| SE | Sweden | X | X | X | X | X | X | X | X | SE |
| SG | Singapore | X | X | X | X | X | X | X | X | SG |
| SI | Slovenia | X | X | - | - | - | X | - | EP | SI |
| SK | Slovakia | X | X | - | - | - | X | X | X | SK |
| SL | Sierra Leone | X | AP | - | - | - | X | - | X | SL |
| SM | San Marino | X | X | - | - | - | X | - | X | SM |
| SN | Senegal | X | OA | - | - | - | X | - | OA | SN |
| ST | Sao Tome and Principe | X | AP | - | - | - | X | - | X | ST |
| SV | El Salvador | X | X | - | - | - | X | X | X | SV |
| SY | Syrian Arab Republic | X | X | - | - | - | X | - | X | SY |
| SZ | Swaziland | X | AP | - | - | - | X | - | AP | SZ |
|
International Phase Introduction |
National Phase Introduction
| |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| TD | Chad | X | OA | - | - | - | X | - | OA | TD |
| TG | Togo | X | OA | - | - | - | X | - | OA | TG |
| TH | Thailand | X | X | - | - | - | X | - | X | TH |
| TJ | Tajikistan | X | X | - | - | - | X | X | X | TJ |
| TM | Turkmenistan | X | X | - | - | - | X | X | X | TM |
| TN | Tunisia | X | X | - | - | - | X | - | X | TN |
| TR | Turkey | X | X | X | X | X | X | X | X | TR |
| TT | Trinidad and Tobago | X | X | - | - | - | X | - | X | TT |
| TZ | United Republic of Tanzania | X | AP | - | - | - | X | - | X | TZ |
|
International Phase Introduction |
National Phase Introduction
| |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| UA | Ukraine | X | X | X | X | X | X | X | X | UA |
| UG | Uganda | X | AP | - | - | - | X | - | X | UG |
| US | United States of America | X | X | X | - | X | X | X | X | US |
| UZ | Uzbekistan | X | X | - | - | - | X | - | X | UZ |
|
International Phase Introduction |
National Phase Introduction
| |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| VC | Saint Vincent and the Grenadines | X | IB | - | - | - | X | - | X | VC |
| VN | Viet Nam | X | X | - | - | - | X | - | X | VN |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| XN | Nordic Patent Institute | X | - | X | X | X | X | - | - | XN |
| XV | Visegrad Patent Institute | X | - | X | X | X | X | - | - | XV |
|
International Phase Introduction |
National Phase Introduction | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Two-Letter Code plus Country
(Annex A ) or Organization |
General Information | Receiving Offices | International Searching Authorities (ISA) | ISA (Supplementary Search) |
International Preliminary Examining Authorities | Country Names and Two-Letter Codes | Deposits of Biological Material | National Chapter | Code | |
| Annex B | Annex C | Annex D | Annex SISA | Annex E | Annex K | Annex L | Annex | |||
| ZA | South Africa | X | X | - | - | - | X | X | X | ZA |
| ZM | Zambia | X | X | - | - | - | X | - | X | ZM |
| ZW | Zimbabwe | X | X | - | - | - | X | - | X | ZW |