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Country codes
Country codes consist of two letters (e.g. GB) indicating the country or organisation where the patent application was filed or granted.
| CC | Name |
| AL | Albania |
| AP | African Regional Industrial Property Organization |
| AR | Argentina |
| AT | Austria |
| AU | Australia |
| BA | Bosnia and Herzegovina |
| BE | Belgium |
| BG | Bulgaria |
| BR | Brazil |
| CA | Canada |
| CH | Switzerland |
| CL | Chile |
| CN | China |
| CO | Colombia |
| CR | Costa Rica |
| CS | Czechoslovakia (up to 1993) |
| CU | Cuba |
| CY | Cyprus |
| CZ | Czech Republic |
| DD | German Democratic Republic |
| DE | Germany |
| DK | Denmark |
| DZ | Algeria |
| EA | Eurasian Patent Organization |
| EC | Ecuador |
| EE | Estonia |
| EG | Egypt |
| EP | European Patent Office |
| ES | Spain |
| FI | Finland |
| FR | France |
| GB | United Kingdom |
| GC | Gulf Cooperation Council |
| GE | Georgia |
| GR | Greece |
| GT | Guatemala |
| HK | Hong Kong (S.A.R.) |
| HR | Croatia |
| HU | Hungary |
| ID | Indonesia |
| IE | Ireland |
| IL | Israel |
| IN | India |
| IS | Iceland |
| IT | Italy |
| JP | Japan |
| KE | Kenya |
| KR | Korea (South) |
| LI | Liechtenstein |
| LT | Lithuania |
| LU | Luxembourg |
| LV | Latvia |
| MA | Morocco |
| MC | Monaco |
| MD | Republic of Moldova |
| ME | Montenegro |
| MK | Former Yugoslav Republic of Macedonia |
| MN | Mongolia |
| MT | Malta |
| MW | Malawi |
| MX | Mexico |
| MY | Malaysia |
| NC | New Caledonia |
| NI | Nicaragua |
| NL | Netherlands |
| NO | Norway |
| NZ | New Zealand |
| OA | African Intellectual Property Organization |
| PA | Panama |
| PE | Peru |
| PH | Philippines |
| PL | Poland |
| PT | Portugal |
| RO | Romania |
| RS | Serbia |
| RU | Russian Federation |
| SE | Sweden |
| SG | Singapore |
| SI | Slovenia |
| SK | Slovakia |
| SM | San Marino |
| SU | Soviet Union (USSR) |
| SV | El Salvador |
| TJ | Tajikistan |
| TR | Turkey |
| TT | Trinidad and Tobago |
| TW | Taiwan |
| UA | Ukraine |
| US | United States of America |
| UY | Uruguay |
| VN | Viet Nam |
| WO | World Intellectual Property Organization (WIPO) |
| YU | Yugoslavia/Serbia and Montenegro |
| ZA | South Africa |
| ZM | Zambia |
| ZW | Zimbabwe |