records-patents
Espacenet / EPO OPS
The European Patent Office's worldwide patent search, accompanied by the Open Patent Services REST API. The API requires an OAuth key (a free tier exists), so we currently link to the Espacenet search interface instead. Use it to search the EPO's worldwide patent database. Flagged as degraded: the site may present a verification challenge before loading.
No programmatic check — opens the archive’s own search.
Why it’s useful & how it works
Niche/link-catalogue tier (see product-concept): surfaced as a described link to its search form. Probe verdict recorded for liveness.
API access
https://ops.epo.org/3.2/rest-services/ (OAuth key; free tier)
An API key is required — usually free; see the endpoints above for where to get one.
Access
May require solving a captcha before it responds.