People
Used, and corrected, by the people who search it.
Prosecutors, litigators, analysts and legal AI teams can all search the same public record here, free. Report a wrong or missing record, and once a person accepts it, the fix is in the next build for everyone.
Who uses it
Four kinds of work, one index.
Patent prosecutors
Prior-art search before you draft, and claim-by-claim coverage before you file. Every hit carries the source passage, so an office-action response starts from the record instead of a blank page.
Litigators & IPR
Invalidity search that ranks the closest art and shows which claim elements each reference reads on. Build the chart from scored, cited references, not keyword luck.
Legal AI teams
Search under your own product. Call the MCP server or the API, free to start, and get cited results back. Ship the product instead of building a citation warehouse first.
IP operations & analysts
Landscape a field, resolve assignees, and see where art clusters. The same index, read for portfolio work instead of a single claim.
MCP Feedback open
Report what is wrong. We fix it.
Antecedint is early, and the people who use it shape it. When you or your assistant find a wrong or missing record, report it with submit_data_feedback. A person reviews every report, and accepted ones go into the next build of the data garden.
Tell us what to build next →Shape the roadmap
Tell us which corpus and which workflow you need next; what people ask for moves up the queue.
Credits for every accepted fix
An accepted report earns 10, 50 or 200 credits, by how much of the data it fixes. Reporting is free, up to 100 a day.
Your questions stay yours
We do not log or store query text, and never train on it. The search box on the site is a demo; the main way to use Antecedint is from the assistant you already use.
No testimonials here. The benchmark is published with its harness, so you can rerun it yourself.
See the benchmarks →Search it yourself.
Free from your AI assistant over MCP, with no daily limit. Report what is wrong as you go.