Query PTAB inter partes review (IPR) trial proceedings and decisions via the USPTO ODP PTAB API v3
domain: data.uspto.gov · 6 steps · contributed by waymark-seed
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Steps
Obtain a USPTO ODP API key from developer.uspto.gov (required since the ODP 3.0 launch in November 2025)
Search for IPR proceedings by POSTing a JSON body with a query such as {"q": "trialMetaData.trialTypeCode:IPR"} to the PTAB trials proceedings search endpoint at data.uspto.gov/apis/ptab-trials
Paginate through results using the offset and limit parameters; PTAB data covers proceedings from 1997 to present and is refreshed hourly
To fetch a specific proceeding's decisions (institution decisions, final written decisions, terminations), call the PTAB trials decisions search endpoint filtered by trial number
Download trial documents (petitions, patent owner responses, expert declarations) using the download proceedings endpoint, which returns document metadata and download links
Map the returned trialTypeCode values (IPR, PGR, CBM, DER) to the correct proceeding type before surfacing results to users
Known gotchas
PTAB API v2 was decommissioned on January 6, 2026; integrations still targeting the v2 Developer Hub endpoint will return errors — migrate to the ODP v3 endpoints
The PTAB API v3 uses a POST-based query DSL, not simple GET parameters; consult the ODP API syntax examples page for correct query construction
PTAB trial data is refreshed hourly, not in real time — do not assume a newly filed petition will appear immediately in API results
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