Country Code Field Code (CC)

All patent documents contain a country code field which, in most cases, uses the standard ISO3166 two letter code for the country such as US, CA, DE, JP, CN, GB, etc.  Most of these codes will be familiar since they are the same Top Level Domain (TLD) codes used by each country for internet addresses.  In some juristictions there is no ISO3166 equivalent, so the following are used:

  • EP:  European Patent Documents (EPO)
  • WO:  PCT or World Patent Documents (WIPO)
  • EA:  Eurasian Patent Organization (EAPO) includes Turkmenistan, Republic of Belarus, Republic of Tajikistan, Russian Federation (most Russian documents are found under RU), Republic of Kazakhstan, Azerbaijan Republic, Kyrgyz Republic, Republic of Moldova

Filtering Search Results by Country Code

Filtering Search Results by Country Code

Select the facets for the country whose documents you would like to view.  Then click the Update Search button to apply the filter and view those documents.

Querying using the CC field code

Querying using the CC field code

To use advanced syntax, you can append any of your queries with "... AND CC:XX" where XX is the country whose document you want to view. For example:

ISD:2014 AND CC:CA -->  Shows all Canadian patent documents published in 2014.


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