EPO
European patent search system api
- Authentication
- OAuth
- HTTPS
- Yes
- CORS
- Unknown
- Category
- Patent
- Documentation / URL
- https://developers.epo.org/
Overview
EPO (OPS) provides European patent data — OAuth-based (unauthenticated calls get rejected, verified).
Quick Start
Search (with your OAuth token):
curl "https://ops.epo.org/3.2/rest-services/published-data/search" \
-H "Authorization: Bearer YOUR_TOKEN"Authentication
- Register at developers.epo.org → OAuth credentials.
- Use OAuth 2.0 for an access token.
⚠️ Gotcha (verified): without auth, the API returns 403 “violation of Fair Use policy”.
Rate Limits & Notes
- Fair-use based; check the docs.
- European patent data.
FAQ
Is EPO free? Yes — free with registration.
Why 403? Unauthenticated calls are rejected (verified) — use OAuth.
What’s the auth style? OAuth 2.0 bearer token.