CASUS / LEGAL RESEARCH · 2026

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Legal Research

Legal research with AI

for Swiss law.

Research across a connected corpus of over 1 million decisions and more than 21,000 federal and cantonal laws. CASUS also covers Germany, Austria, France, Italy and Spain, directly in the browser and in Word.

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§ 1 - CASE LAW AND STATUTES

Fig. 01 · Decision with highlighted passage

Legal Research

Statutes and case law on demand.

For Swiss law, CASUS covers the Federal Supreme Court, including published leading cases (BGE), the Federal Administrative Court, the Federal Criminal Court and the Federal Patent Court, plus decisions from all 26 cantons and federal and cantonal legislation. Results include citations so you can review the sources used directly in the AI-Chat.

(a)

Decisions and statutes in one search

(b)

Every citation linked to its source

(c)

Only sources that were actually found

§ 2 - SOURCES

Which countries and legal sources

does CASUS cover?

Figures describe the size of the connected source corpora as of 2 October 2026. Swiss decisions and statutes are counted separately; other country totals count legal documents.

Switzerland

Over 1 million decisions and more than 21,000 laws

1,078,749 decisions; 21,153 laws separately

Federal courts

Bundesgericht einschliesslich BGE-Leitentscheide
Bundesverwaltungsgericht
Bundesstrafgericht
Bundespatentgericht

All 26 cantons

Aargau
Appenzell Innerrhoden
Appenzell Ausserrhoden
Bern
Basel-Landschaft
Basel-Stadt
Fribourg
Genève
Glarus
Graubünden
Jura
Luzern
Neuchâtel
Nidwalden
Obwalden
St. Gallen
Schaffhausen
Solothurn
Schwyz
Thurgau
Ticino
Uri
Vaud
Valais
Zug
Zürich

Legislation

Bundesgesetze (Fedlex)
Kantonale Gesetzgebung

Germany

Over 620,000 legal documents

623,483 legal documents in the connected source corpus

Seven federal courts

Bundesgerichtshof (BGH)
Bundesfinanzhof (BFH)
Bundesverwaltungsgericht (BVerwG)
Bundespatentgericht (BPatG)
Bundesarbeitsgericht (BAG)
Bundessozialgericht (BSG)
Bundesverfassungsgericht (BVerfG)

14 state portals

Baden-Württemberg
Bayern
Berlin
Brandenburg
Hamburg
Hessen
Mecklenburg-Vorpommern
Nordrhein-Westfalen
Rheinland-Pfalz
Saarland
Sachsen
Sachsen-Anhalt
Schleswig-Holstein
Thüringen

Further court and authority sources

Gemeinsamer Senat der obersten Gerichtshöfe des Bundes
Bundeskartellamt
Bafin
Vergabekammern
Berufsgerichte

Austria

Over 1.58 million legal documents

1,582,908 legal documents in the connected source corpus

Courts

Oberster Gerichtshof (OGH)
Verwaltungsgerichtshof (VwGH)
Bundesverwaltungsgericht
Verfassungsgerichtshof (VfGH)

Nine state administrative courts

Landesverwaltungsgericht Niederösterreich
Landesverwaltungsgericht Tirol
Landesverwaltungsgericht Wien
Landesverwaltungsgericht Kärnten
Landesverwaltungsgericht Steiermark
Landesverwaltungsgericht Salzburg
Landesverwaltungsgericht Vorarlberg
Landesverwaltungsgericht Burgenland
Landesverwaltungsgericht Oberösterreich

Federal Legal Information System

RIS: Bundesrecht und Landesrecht

France

Over 3 million legal documents

3,077,018 legal documents in the connected source corpus

Courts and institutions

Cour de cassation
Conseil d’État
Commercial courts
Administrative courts of appeal
Courts of appeal
Conseil constitutionnel
Cour des comptes
Chambres régionales des comptes
Civil and criminal courts
Administrative courts
Labour courts
Social courts (historical)
Autorité de la concurrence
Tribunal des conflits
Agricultural tenancy courts

Italy

Over 1.39 million legal documents

1,398,674 legal documents in the connected source corpus

Official Italian sources

Gazzetta Ufficiale della Repubblica Italiana
Autorità Garante della Concorrenza e del Mercato (AGCM)
Banca d'Italia
Garante per la protezione dei dati personali
Repubblica Italiana (Normattiva)
Corte Suprema di Cassazione
Camera dei Deputati
Corte Costituzionale
Consiglio di Stato
Senato della Repubblica
Comitato Interministeriale per il Credito e il Risparmio (CICR)

Spain

Over 350,000 legal documents

357,644 legal documents in the connected source corpus

Legislation, court and authorities

Boletín Oficial del Estado (BOE)
Tribunal Constitucional
Agencia Española de Protección de Datos (AEPD)
Comisión Nacional de los Mercados y la Competencia (CNMC)

§ 3 - DRAFTING

From research to action.

Use your research as the basis for a clause, memo or longer draft. In the browser, Chat creates longer drafts in separate, editable drafting blocks. Revise the wording directly, export documents as Word files or open email drafts in your email client.

(a)

Clauses, memos and longer drafts

(b)

Editable drafting blocks

(c)

Export to Word or as an email draft

Fig. 02 · From research to draft

Legal Research

§ 4 - SECURITY

Fig. 03 · Data protection

Legal Research

Your research

stays confidential.

Queries and content are stored in Switzerland and processed within the EU. Your research is never used to train AI models, and you can use it in the browser and directly in Word.

(a)

Stored in Switzerland

(b)

No training on your data

(c)

In the browser and in Word

§ 5 - WHERE YOU WORK

CASUS

One workspace

CASUS works

where you work.

Chat, review and benchmark contracts right inside Word. Link SharePoint files and add Outlook emails to your Dossiers, so CASUS fits into the way you already work.

Get the Word Add-in

CASUS

One workspace

CASUS works

where you work.

Chat, review and benchmark contracts right inside Word. Link SharePoint files and add Outlook emails to your Dossiers, so CASUS fits into the way you already work.

Get the Word Add-in

CASUS

One workspace

CASUS works

where you work.

Chat, review and benchmark contracts right inside Word. Link SharePoint files and add Outlook emails to your Dossiers, so CASUS fits into the way you already work.

Get the Word Add-in

§ 6 - EXECUTION

Your best legal documents.

Ever.

Start with a free trial. No IT project. No long contract.

Start free trial →

Book a demo

Authorised signatory

CASUS · 2026

§ 6 - EXECUTION

Your best legal documents.

Ever.

Start with a free trial. No IT project. No long contract.

Start free trial →

Book a demo

Authorised signatory

CASUS · 2026

§ 6 - EXECUTION

Your best legal documents.

Ever.

Start with a free trial. No IT project. No long contract.

Start free trial →

Book a demo

Authorised signatory

CASUS · 2026

§ 7 - FAQ

Annex A

Questions about

Legal Research.

Evaluating CASUS for your firm?

Get in touch →

AI legal research answers legal questions by searching court decisions and statutes and citing the sources it found. CASUS Legal Research links every citation to the decision or statute, highlights the relevant passage and only cites sources it actually found.

CASUS Legal Research covers Switzerland, Germany and Austria, each with its own court decisions and statutes, as well as further jurisdictions. The sources section on this page shows the current corpus per country.

Yes. Every citation is a link to the source. For decisions, CASUS opens the ruling and highlights the cited passage, so you can check the statement directly.

Yes. The chat uses your research as the basis for a clause, memo or longer draft in editable drafting blocks. You can export the draft to Word or open it as an email draft.

Yes. Legal Research is available in the CASUS web app and in the CASUS Add-in for Microsoft Word, so your research stays next to the document you are working on.

Yes. CASUS hosts data in Switzerland and the EU, never uses customer documents to train AI models and is built for the requirements of attorney-client privilege. Details are on the CASUS security page.

Legal Research is included in the CASUS Standard plan together with everything else, for CHF 120 per user per month billed annually or CHF 145 billed monthly. You can try everything free for 14 days.