USPTO Public APIs

1. PatentsView → Open Data Portal (ODP)

Status (checked 2026-08-30): The PatentsView PatentSearch API that lived at https://search.patentsview.org/api/v1/ is unavailable. The host no longer resolves (NXDOMAIN). USPTO migrated PatentsView onto the Open Data Portal on 2026-03-20; PatentSearch and related interactive features are paused with no published relaunch date. Do not call search.patentsview.org, do not register at the old patentsview.org/apis/keyrequest flow, and do not treat legacy api.patentsview.org query URLs as live search endpoints (they redirect to the transition guide).

Current access path

Use ODP for PatentsView bulk datasets and data dictionaries:

Transition guide: https://data.uspto.gov/support/transition-guide/patentsview
PatentsView program page: https://www.uspto.gov/ip-policy/economic-research/patentsview
ODP home / bulk directory: https://data.uspto.gov/

Category	Example tables	ODP bulk dataset page
Granted patents — baseline / disambiguated	`g_patent`, `g_cpc_current`, `g_assignee_disambiguated`	https://data.uspto.gov/bulkdata/datasets/pvgpatdis
Granted patents — long text	`g_brf_sum_text_`, `g_claims_`, `g_detail_desc_text_*`	https://data.uspto.gov/bulkdata/datasets/pvgpattxt
Pre-grant publications — baseline / disambiguated	`pg_published_application`, `pg_cpc_current`	https://data.uspto.gov/bulkdata/datasets/pvpgpubdis
Pre-grant publications — long text	`pg_brf_sum_text_`, `pg_claims_`	https://data.uspto.gov/bulkdata/datasets/pvpgpubtxt
Sorted (beta)	`g_sorted_applicant`, `pg_sorted_individual`	https://data.uspto.gov/bulkdata/datasets/pvsorted
Annualized	yearly CSV tables	https://data.uspto.gov/bulkdata/datasets/pvannual

Data dictionaries (when published) are linked from the “Documents and Resources” sidebar on each ODP dataset page above.

Auth for ODP bulk / API access

ODP access requires a USPTO.gov account (MFA). Obtain an ODP API key from https://data.uspto.gov/apikey — previously issued PatentsView PatentSearch keys are not compatible. Prefer loading the key from .env as USPTO_ODP_API_KEY and sending it with the header ODP documents for its Bulk Datasets API (commonly X-API-KEY). Never print the key in provenance.

If the user needs interactive keyword / inventor / assignee search rather than bulk tables, say clearly that PatentSearch is paused during the ODP transition and point them at the transition guide — do not invent a replacement search URL.

Historical note

Legacy PatentsView REST host api.patentsview.org is decommissioned for search; requests redirect to the ODP transition guide.
The Elasticsearch PatentSearch base URL https://search.patentsview.org/api/v1/ must not be used until USPTO republishes an ODP-hosted replacement.

2. PEDS — Patent Examination Data System

URL: https://ped.uspto.gov/api/queries

Method: POST

For patent prosecution data (application status, filing dates, examiner info).

{
  "searchText": "applicationNumberText:16123456",
  "fl": "*",
  "mm": "100%",
  "df": "patentTitle",
  "facet": "false",
  "sort": "applId asc",
  "start": 0
}

No API key required but heavily rate limited. Availability can be unreliable.

3. TSDR — Trademark Status & Document Retrieval

For trademark lookup by serial or registration number (not full-text search).

GET https://tsdr.uspto.gov/documentxml/status/{serial_number}
GET https://tsdr.uspto.gov/documentxml/status/rn{registration_number}

Returns XML with mark details, status, owner, goods/services, prosecution history.

No API key. Rate limited. No JSON endpoint — responses are XML.

4. Limitations

No public REST API for trademark full-text search (TESS is web-only)
PatentsView PatentSearch API is paused during the ODP migration; use ODP bulk datasets for PatentsView tables until USPTO republishes search APIs
PEDS availability is inconsistent
TSDR requires knowing the serial/registration number already