LitLex · legal research

Legal research on Litco’s own corpus.

LitLex, Litco’s legal research library, covers federal and most state appellate case law, with new decisions arriving within days of being handed down. The Matter Agent sits beside every result, so litigators can question a case or check a citation without leaving the page. Litco flags a case as bad law only after two independent readings agree.

The Matter Agent runs the search for you.

Search with terms and connectors or in plain English, filter by jurisdiction, and read highlighted excerpts from the opinions themselves. Or skip writing the search: tell the Matter Agent what you are looking for, and it composes the queries, runs them, reads the results, and reports back with verified citations.

The Matter Agent pane during research: a verified answer on whether Swift v. Tyson is still good law, quoting Erie's overruling language with verified-citation badges
Asked whether Swift v. Tyson still stands, the Matter Agent runs its own searches and cite checks, then reports with verified citations. Captured from a live instance.

Open an opinion in LitLex and the treatment history sits at the top of the page, along with the date the law is current through. The Matter Agent reads every citing decision to judge whether the case is still good law. LitLex flags a case as overruled only when two independent readings agree. When a call is close, LitLex routes the question to a more capable model that can draw finer distinctions before any flag appears.

A search-results entry for Erie Railroad v. Tompkins carrying the red negative-treatment flag
Erie Railroad v. Tompkins in the results list, carrying its red treatment flag. Captured from a live instance.

A page for every judge in the corpus.

Litco builds a page for every judge in the corpus, 10,539 of them, from the opinions. Lawyers can read what the judge has written year by year and which authorities the judge cites most. They can see who cites the judge and how the judge’s decisions have fared on review. The incumbent platforms sell judge analytics as a premium add-on, while Litco includes the judge pages in the library.