country | 33 | The country Country is represented by a standard 2-character code based on WIPO ST.3. In the case of WO publications, the country is the authority where the application was filed. |
doc-number | 31 | doc-number is provided in both DOCDB-normalized format and in the format provided by the publishing patent office. DOCDB-normalized format usually includes the filing year (2 or 4 digits) at the beginning or end unless the year is already embedded in the application number.
- US application numbers in DOCDB format have changed since late 2010 (beginning of series code 13, see link below for more details). USPTO "original" format always includes a prepended series code.
- WO application numbers are formatted with a 2-digit year followed by a 5-digit serial number prior to 2004-01-01. Beginning with application dates in 2004, the format is 4-digit year followed by 6-digit serial number (e.g. 9813495 or 2004000001). A kind code of "W" must be used to distinguish WO applications from national office applications.
- JP application numbers include a 2-digit year as suffix until 2000; thereafter the 4-digit year is prepended (e.g. 131699 or 2007000849).
For a complete discussion of application numbers in DOCDB over time and over multiple authorities, please see Number format concordance - application numbers at
https://www.epo.org/searching-for-patents/helpful-resources/data/tables/regular.html.
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kind | 34 | Kind code of applications comes from DOCDB (A=patent, U=utility, P=provision, W= PCT, F=design, T=translation). |
date | 32 | Date of filing (YYYYMMDD). |
lang | | Filing language, 2-character code based on ISO 639-2. The default value is "XX" if no language information is provided by the data sourcessource. |