Powerful, intuitive research tools for EU law

Search and read all of EU case law. Plus the treaties. With detailed AI annotations and AI case analysis — facts, questions, reasoning, and more. And an agentic research assistant tailored for EU law. Search and read for free. Subscribe for AI tools.
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Choice

Not into AI? No problem.

We get that not everyone's into AI. We make it easy to disable all AI features with a single click. We still have a more complete collection of EU case law than EUR-Lex or the Court's own database — and you can search it all by name, number, or keyword.
Under the hood

EU law, connected.

Every judgment, treaty and act is linked to what it cites and what cites it: more than 900,000 citations. LawLibrary uses that graph to find the authorities that matter, to trace a line of case law back to where it began, and to map the sources behind every answer.

900,000+

Citations between documents, each one linked to the paragraph it cites where the citation names one.

39,000+

Judgments, opinions, orders, treaties and acts that EU case law cites, each linked to what cites it.

100,000+

Legal propositions stated across EU case law, classified across 25 areas of law.
The 400 most-cited documentsCase lawLegislation and treaties

This visualization shows every judgment, order, directive, regulation, decision, and treaty that's ever been cited in a CJEU judgment. Each dot is a document, and documents that cite each other are pulled closer together. The blue dots are the most cited documents.

What it powers

  • Research assistant

    It finds the authorities that matter to your question, traces a line of case law back to where it began, and maps the sources behind every research note: what each one cites, and what cites it.
    See the research assistant
  • Legal propositions

    Browse the legal rules stated across EU case law with the most-cited first, each linked to the judgment and paragraph that state it.
    See propositions
  • Annotation layers

    Every citation in a judgment links to what it cites, and every paragraph shows how often it has been cited since.
    See the annotation layers
  • Case analysis

    What it works out about each judgment (its parties, facts, legal questions and reasoning) becomes part of the graph, linked to the paragraphs it comes from and to the cases they cite.
    See the case analysis
Coverage

More of EU law, all in one place.

LawLibrary's database combines the best of the Court's own database and EUR-Lex. It's more complete than either official source.

57,000+

Every decision ever.*

Every judgment, order, and AG opinion the Court of Justice, the General Court and the Civil Service Tribunal has ever published. *It's possible we've missed a few. If you find any we're missing, let us know so we can add it!

49,000+

Every proceeding ever.*

Every proceeding ever opened at the Court of Justice, the General Court, and the Civil Service Tribunal, with each proceeding mapped to its documents. *Again, it's possible we've missed a few. Let us know!

900,000+

Citations, down to the paragraph.

We try to identify and extract every citation to a judgment, law, or treaty in the CJEU's case law. Unlike EUR-Lex and InfoCuria, we have full coverage of all periods and we always record the citing paragraph and the cited paragraph, if there is one.

110,000+

Legal propositions.

We found every paragraph of every judgment that's ever been cited, and then we used AI to extract and summarize over 100,000 legal rules. We classified them in a purpose-built taxonomy with 25 major categories to make them easy to explore and search.

500,000+

Every official translation.

For all judgments, orders and Advocate General opinions since 1990, we provide every official translation so you can read them in your own preferred language. You can read any two side by side.

19,000+

Even orders.

The Court increasingly decides cases by order, including on the substance. We have more than twice as many orders as EUR-Lex.

Proceedings, by the year the case was brought

LawLibrary46,371EUR-Lex31,880

Cases with at least one judgment, order or opinion. Recent cases are mostly still pending.

Judgments, orders and opinions, by the year they were delivered

LawLibrary57,547EUR-Lex45,039

Including the Advocate General's opinions and views. 2026 is the year to date.

Counted on 13 November 2026. EUR-Lex: distinct CELEX numbers for judgments, orders and Advocate General opinions and views, from its public SPARQL endpoint, excluding summaries and information notes; its proceedings are the case numbers those CELEX numbers carry. Official Journal notices are excluded from both.

The research agent
Pro

A responsible agentic research assistant that checks its own work.

LawLibrary.AI was founded by researchers. We take correctness seriously, and we've designed our agentic research assistant to be precise, honest, and transparent. It writes a research plan, finds sources, writes a draft answer, verifies that every claim is backed by a source, and revises to clean up any errors. It's upfront about the limitations of its answer.
  1. 01

    Analyzes your question

    It rephrases imprecise or under-specified questions, splits questions that have several parts, and asks you for clarification if it doesn't understand what you're asking.
  2. 02

    Makes a research plan

    It decides how to search for sources to best answer your question. It can run semantic searches and keyword searches, look up cases and documents, and explore our knowledge graph.
  3. 03

    Searches, then searches again

    It carefully evaluates the sources it finds against your question. If it doesn't have enough information to write a complete answer, it can write additional searches to fill in the gaps.
  4. 04

    Cites every sentence

    It checks that every claim in every sentence of its answer has at least one valid citation — a specific paragraph of a specific document — and that the cited paragraph actually supports the claim.
  5. 05

    Revises its draft

    If a claim doesn't have enough support, it'll revise its draft. If it can't find a source to back up a claim, it'll remove the claim and rewrite the surrounding text.
  6. 06

    Explains its limitations

    It evaluates whether it's fully answered your question and notes where the evidence is stronger and where it's thinner. It rates its confidence in the answer and explains its reasoning.
Try a free demo
Question: Can UEFA and FIFA stop clubs from joining a breakaway league like the Super League, and how has the Court of Justice treated sports federations' approval rules in that case and in related cases?
Sources
  1. DeliègeC-51/96 · 2000
  2. Meca-Medina and Majcen v CommissionC-519/04 P · 2006
  3. Olympique LyonnaisC-325/08 · 2010
  4. European Superleague CompanyC-333/21 · 2023
  5. Royal Antwerp Football ClubC-680/21 · 2023
  6. DiarraC-650/22 · 2024
  7. Royal Football Club SeraingC-600/23 · 2025

Chosen from 36 sources considered. High confidence.

Safeguards and guardrails.

AI agents can make mistakes. That's just how the technology works. But we work hard to make sure our agent researches and answers your question responsibly and transparently.
  • We don't try to guess.

    We instruct the agent to ask for clarification if it isn't sure what you're asking.
  • We try to back up claims.

    We instruct the agent to remove any claims that aren't directly supported by the evidence it's found.
  • We don't try to hide gaps.

    We instruct the agent to honestly evaluate its own answer and clearly admit what it doesn't cover, where sources are thin, and where sources disagree.
  • We're conservative.

    We instruct the agent to discuss the limitations of its answer and to lower its confidence in its whole answer if it thinks even one aspect of your question isn't fully answered by the sources.
  • We use official translations.

    You can ask a question in any language and the agent will respond in the same language. But we instruct the agent not to translate the law. We show you official translations.
  • We don't save your questions.

    Your questions are your own business. We protect your privacy. We process your question to write an answer, and then we discard it. We never save your questions and we never link your questions to your account.
Propositions
Pro

Start from the rule, not the case.

A judgment states rules of law, and later judgments repeat them. LawLibrary.AI extracts those rules as propositions: one sentence each, linked to the judgment and paragraph that state it. Search them by meaning or by wording, or find every proposition that says something similar.
On top of it sits a purpose-built taxonomy of EU law: the legal propositions stated across EU case law, classified across 25 areas of law and linked to the judgments that state them.
Explore propositions
Annotations
Pro

AI-powered annotation over the text.

Switch them on in the reader and they sit over every judgment, paragraph by paragraph.

Citation highlighting

Every citation in the text is marked and linked to the document it cites, and to the paragraph, where it names one.

Citation notes

The margin shows how often each paragraph has been cited elsewhere in the case law, so the passages that matter stand out.

Content tags

Each paragraph is tagged with the legal issues it deals with, so the part of a long judgment that answers your question is easy to find.

Actor tags

The institutions, parties and courts each paragraph mentions, tagged beside it.

Topic tags

Each paragraph is tagged with its subject areas, so you can follow a subject through a judgment.

Propositions

The legal rule each paragraph states, set out as a proposition and classified in the taxonomy.
Case analysis
Pro

Judgments can be really dense. We make it easier to get your head around them.

Open any judgment and LawLibrary.AI can analyze it for you: what happened, what the Court was asked, how it reasoned, and what the judgment means. Every point is tied to the paragraphs it comes from, so you can check it against the text.
Example

European Superleague Company (C‑333/21)

The facts of the case, told in order from the parties to the reference, with every fact tied to the paragraph that states it.
This summary of case facts is AI-generated based on the text of the document. It may contain errors. Double-check the information before using it.

The parties

AI European Superleague Company SL was established in Spain as a company governed by private law. It pursued the objective of setting up a new international professional football competition known as the “Super League”. A22 Sports Management SL described itself as a company established to provide services related to creating and managing professional football competitions, more specifically the Super League project.

The project

According to the Madrid court, the founding professional football clubs of European Superleague Company SL intended to establish a new international football competition involving 12 to 15 permanent-member clubs and an undefined number of qualified clubs. European Superleague Company SL based the project on a shareholder and investment agreement. That agreement provided for contracts binding participating or eligible professional football clubs and three companies established or to be established by European Superleague Company SL. Those contracts provided for the clubs to assign their media or commercial rights to European Superleague Company SL in return for remuneration.

Funding and recognition

According to the Madrid court, JP Morgan AG undertook to give European Superleague Company SL financial support and an infrastructure subsidy through a bridging loan of up to approximately EUR 4 billion. The agreement made the establishment of the Super League and the provision of its necessary funds subject to recognition by FIFA or UEFA, or legal protection from the competent authorities. It also provided for FIFA and UEFA to be informed of the project.

Opposition to the project

European Superleague Company SL brought a commercial action against FIFA and UEFA before the Juzgado de lo Mercantil de Madrid (Commercial Court, Madrid, Spain). According to the Madrid court, FIFA and UEFA opposed the Super League project after it was launched. On 21 January 2021, FIFA and the six continental confederations recognised by FIFA issued a statement refusing to recognise the Super League. They said that clubs and players taking part would be expelled from FIFA and UEFA competitions. On 18 April 2021, UEFA, the English, Spanish and Italian football associations, and certain professional leagues issued a press release stating that the clubs concerned would be banned from other competitions and that their players could be denied representation of their national teams.

Measures by Madrid court

On 19 April 2021, the Juzgado de lo Mercantil de Madrid held European Superleague Company SL’s action admissible. The following day, it ordered protective measures preventing FIFA and UEFA from thwarting or hampering the preparation and establishment of the Super League. The Madrid court stated that FIFA and UEFA held an economic and commercial monopoly over organising and marketing international interclub football competitions and exploiting related rights. It also stated that they exercised regulatory, control, decision-making and sanctioning powers over football stakeholders.

The relevant rules

According to the Madrid court, FIFA and UEFA’s rules made organising and marketing interclub football competitions subject to their prior approval. FIFA’s rules also required approval for forming international leagues or similar groups of clubs or leagues, and for matches or competitions before they took place. The rules further required approval for sporting contacts involving players or teams affiliated to FIFA or UEFA member associations. FIFA and UEFA also reserved the exclusive power to authorise broadcasts of matches and events involving interclub football competitions. The Madrid court found that these rules were not placed within a framework of substantive criteria and detailed procedural rules ensuring transparency, objectivity and non-discrimination.

The reference

The Juzgado de lo Mercantil de Madrid stayed the proceedings and referred questions to the Court of Justice for a preliminary ruling. The President of the Court later rejected the request for the expedited procedure. The Court of Justice was therefore asked to give a preliminary ruling on the questions referred by the Madrid court; the facts provided do not state the wording of those questions.

A shortened demo of LawLibrary.AI's analysis of European Superleague Company (C-333/21), generated by AI. Open the judgment to see all of it.

Open the judgment
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  • Answers with citations
    Ask in plain language. Every claim in the answer carries a citation, and every citation opens the paragraph it was drawn from.
  • Case analysis
    The facts, the legal questions, the chains of reasoning and a legal commentary for any judgment, on demand, each tied to its paragraphs.
  • AI annotations
    Highlight and link every citation in the text, see how often each paragraph has been cited, surface the proposition each one states, and tag the text by content, actor and topic.
  • Propositions
    Start from the rule rather than the case. Browse the legal propositions stated across EU case law, classified across 25 areas of law.

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