Patent by Ouroboros

Public patent records

Patent by Ouroboros

Search USPTO and EPO records from ChatGPT, Claude, Gemini, Grok, Cursor, or any Streamable HTTP assistant. Built for inventors, startup founders, patent agents and attorneys, and engineers who need to know whether an idea is already in the public record.

Green ouroboros around a white lightbulb, with the word Patent
Not legal advice. Patent by Ouroboros reports records returned by public patent offices. It is not legal advice and is not a substitute for a registered patent attorney or agent. A result is not an opinion on patentability, infringement, validity, or freedom to operate.

What the assistant can ask

search_patents

Keywords, claim language, CPC class, assignee, inventor, and dates.

get_patent

Abstract, claims, status, family, and citations for one real record.

find_patent_citations

Documents that cite a patent, and documents that patent cites.

search_prior_art

An idea description in, the closest office records and their links out.

Access

14 days, then Pro.

A new account can search during the trial. After that, Pro continues through Stripe Checkout. The amount is shown by Stripe, not here.

Create an account

14 days of search access start when the account is created.

Sign in

Use the same account when an assistant opens the connection screen.

Offices

Results come from the USPTO Open Data Portal and, when you add a free consumer key, EPO Open Patent Services. Google Patents is used only as a link. The legacy PatentsView search API has been paused since its March 2026 move to the Open Data Portal. Patent numbers are copied from office responses and are never filled in when an office does not answer.