Overview

Search U.S. case law, verify citations, and produce memo-quality research reports with AI.

The Research surface in Irys One gives legal professionals three integrated tools for legal research:

Case Law Search

Run dual search across U.S. case law powered by CourtListener's database of 50M+ citations:

• Keyword / boolean search -- traditional query operators for precise control.

• AI semantic search -- natural language questions that the AI converts into relevant results.

Both searches run in parallel so you get comprehensive coverage in a single query. Filter by jurisdiction, date range, judge, topic, and more.

Cite Check

Verify every citation in a document or research output:

• Existence check -- confirms the cited case actually exists (anti-hallucination).

• Format accuracy -- validates that the citation string matches the real case.

• Good law status -- flags cases that have been overruled, reversed, or otherwise negatively treated.

Cite Check catches hallucinated or stale references before they reach a filing.

Deep Research

Toggle on Deep Research in the AI Assistant for multi-source, iterative research:

• Searches across internal documents, case law, web sources, and statutes.

• The AI reasons about knowledge gaps and performs additional queries automatically.

• Produces structured research reports with inline citations.

All research tools are available inside a Matter, so the AI understands your case context when generating queries and reports.

Next steps

Case Law Search

Search, filter, bookmark, and save cases from CourtListener.

Deep Research

Produce memo-quality reports with multi-source iterative research.

Cite Check

Verify that every citation is real, correctly formatted, and still good law.