AI Legal Research for the United States
Research US federal and state law with answers cited to the exact page — Judicio connects directly to CourtListener and lets you verify every authority back to its source.
500 credits · No credit card required · Plans from $100/month after trial
Coverage for United States
American legal research runs across two parallel systems — federal and state — each with its own statutes, regulations, and three tiers of courts. Judicio connects directly to CourtListener for US case law among its 33 dedicated database integrations, scopes each question to the jurisdiction that controls it, and cites every answer to the exact page and quoted passage so you can confirm good law before you rely on it.
Databases & sources Judicio searches
CourtListener
Millions of US federal and state judicial opinions and dockets, queried directly and cited to the page.
How Judicio helps in United States
Every tool runs on the same documents, and every answer comes cited to its exact page and passage.
CourtListener research, cited
Ask a question in plain English and research US federal and state opinions through a direct CourtListener integration. Every answer carries the exact page and quoted passage, with deterministic citation labels you can open and verify.
Explore ResearchGood-law verification stays with you
Judicio surfaces the later decisions that cite your authority and quotes how they treated it, but never declares a case good law on its own — it is not a citator. You read the subsequent history and confirm current status before you file.
Explore ResearchReview contracts against US standards
Check multiple agreements in a single run against your own playbook or an expert checklist — governing law, choice of forum, indemnities — each finding risk-scored, quoted to the clause, and exported as a tracked-changes Word redline.
Explore Document ReviewExtract deal points for diligence
Ask up to 25 questions across multiple data-room documents and get a typed, cited grid — change-of-control, assignment, MFN — ready to export to Excel for the red-flag report.
Explore Review MatrixBuild litigation chronologies
Turn a brief bundle into a dated chronology with deadline flags, each event cited to its source page — from a federal complaint to a multi-exhibit motion record.
Explore Timeline BuilderPrivate by design, US data residency
Judicio never trains on your data, encrypts documents at rest, and offers role-based access with an audit trail — with custom US data residency available on enterprise plans.
Explore CollaborationUnited States FAQ
Does Judicio cover US federal and state law?
Yes. Judicio's Legal Research connects directly to CourtListener for US case law — one of 33 jurisdictions with a dedicated database integration — and reaches 100-plus jurisdictions through curated legal web search. You scope each question to the controlling jurisdiction, and every answer is cited to the exact page and quoted passage.
Can Judicio tell me whether a US case is still good law?
It can surface the later decisions that cite your case and quote how they treated it, which speeds the check enormously — but it does not declare a case good law on its own, and Judicio is not a citator. Good-law verification stays a deliberate, separate step you complete before relying on any authority.
How does Judicio stop fabricated US citations?
Every answer is grounded in a retrieved source and quotes the exact passage, with deterministic citation labels that are never AI-generated, and every web source is archived as a permanent PDF. You open and read the passage before relying on it — the structural defence against the hallucinated authority that led to the Mata v. Avianca sanctions.
Is my data kept private and in the US?
Judicio does not train on your data, encrypts documents at rest, and provides role-based access and an audit trail, with custom data residency in the US, EU, or India available on enterprise plans.
The features behind this
Research
Ask a legal question in plain English — get answers cited to real authorities across 100+ jurisdictions.
Learn moreDocument Review
Flag the risks that matter across a whole batch — each one scored, cited, and ready to redline.
Learn moreReview Matrix
Ask questions across multiple documents — answers in a grid, each typed and cited to source.
Learn moreTimeline Builder
Pull every date and deadline from multiple files into one chronology — each cited, every deadline flagged.
Learn moreSolutions for your team
Law Firms
One cited workspace for research, document review, drafting, and matter management — built for firms of every size.
Explore Law FirmsLitigation
Build chronologies, review the record, and research authority — every date and fact cited to its source page.
Explore LitigationDue Diligence
Turn a data room into a cited findings grid — review multiple documents at once and export to Excel.
Explore Due DiligenceRelated reading
Try Judicio on your United States matters
Start a 7-day free trial with 500 credits — no credit card required. Test it on your own brief, contract, and bench of authorities.