Enriched Citation API (Version 1)

The Enriched Citation API provides the Intellectual Property 5 (IP5 - EPO, JPO, KIPO, CNIPA, and USPTO) and the Public with greater insight into the patent evaluation process. It allows users to quickly view information about which references, or prior art, were cited in specific patent application Office Actions, including: bibliographic information of the reference, the claims that the prior art was cited against, and the relevant sections that the examiner relied upon. The API allows for daily refresh and retrieval of enrich citation data from Office Actions mailed from October 1, 2017 to 30 days prior to the current date.

Data and Resources

Field Value
PrimaryITInvestmentUII
accessLevel public
accessLevelComment
accessURL https://developer.uspto.gov/api-catalog/uspto-enriched-citation-api
accrualPeriodicity R/P1D
bureauCode {006:51}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
dataDictionary https://developer.uspto.gov/ds-api-docs/index.html?url=https%3A//developer.uspto.gov/ds-api/swagger/docs/enriched_cited_reference_metadata.json
dataQuality true
format api
identifier ODP-ENR-CIT-API-v1
issued 2018-04-12
landingPage https://developer.uspto.gov/api-catalog
language {en-US}
license https://creativecommons.org/publicdomain/mark/1.0
mbox Developer@uspto.gov
modified 2021-12-10
programCode {006:070}
publisher Open Data Portal/Developer Hub Team
publisher_hierarchy U.S. Federal Government > Department of Commerce (DOC) > U.S. Patent and Trademark Office (USPTO) > Open Data Portal/Developer Hub Team
references {https://developer.uspto.gov/ds-api-docs/index.html?url=https%3A//developer.uspto.gov/ds-api/swagger/docs/enriched_cited_reference_metadata.json}
resource-type Dataset
source_datajson_identifier true
source_hash 9a92ee9146c527831468240cab438c28a1c3c18e
source_schema_version 1.1
systemOfRecords
temporal 2017-10-01/2021-06-30
theme {uspto,ip5,enriched,citation,"prior art","office action",claims,"machine learning",ai,statutes,references,api}
webService https://developer.uspto.gov/api-catalog/uspto-enriched-citation-api
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • ai
  • amerigeo
  • amerigeoss
  • api
  • citation
  • ckan
  • claims
  • enriched
  • geo
  • geoss
  • ip5
  • machine-learning
  • national
  • north-america
  • office-action
  • prior-art
  • references
  • statutes
  • united-states
  • uspto
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer Scott Beliveau
maintainer_email Scott.Beliveau@uspto.gov
metadata_created 2025-11-22T19:27:54.891213
metadata_modified 2025-11-22T19:27:54.891217
notes The Enriched Citation API provides the Intellectual Property 5 (IP5 - EPO, JPO, KIPO, CNIPA, and USPTO) and the Public with greater insight into the patent evaluation process. It allows users to quickly view information about which references, or prior art, were cited in specific patent application Office Actions, including: bibliographic information of the reference, the claims that the prior art was cited against, and the relevant sections that the examiner relied upon. The API allows for daily refresh and retrieval of enrich citation data from Office Actions mailed from October 1, 2017 to 30 days prior to the current date.
num_resources 1
num_tags 20
title Enriched Citation API (Version 1)