Law as structure, not text
We convert legislation into a form in which the system knows the hierarchy of provisions, the references between them and how they change over time.
knowledge graph · versioned wording
AI for Czech law
Answers from Czech law you can verify.
Lexiqon searches statutes and case law, answers in plain language, and attaches the exact provision, in the version in force, to every statement. When it finds no source, it gives no answer.
- A source for every statement
- The version in force on the date you ask
- Cloud or your own servers
Research
3 sources verified
Question
What is the limitation period for a claim for damages under the Civil Code?
Answer
The limitation period is three years1 and runs from the day the injured party learns of the damage and of the person liable to compensate it.2 The claim becomes time-barred no later than ten years after the damage arose, or fifteen years if it was caused intentionally.3
- 1Section 629(1) · Act No. 89/2012 Coll.“The limitation period is three years.”
- 2Section 620(1) · Act No. 89/2012 Coll.“…from the day the injured party learns of the damage or harm and of the person liable to compensate it.”
- 3Section 636(1) and (2) · Act No. 89/2012 Coll.“…no later than ten years from the day the damage or harm arose.”
Version in force on the date of the query
§ 1How it works
From question to verified answer in four steps.
Lexiqon takes over the routine of research and checking. Decisions and responsibility stay with you.
- 01
Ask
Type your question in plain Czech or English, or upload a document from the case file.
- 02
Research
It finds the relevant provisions and decisions in a verified base and traces the links between them.
eSbírka · NALUS - 03
Answer or draft
It prepares an answer or a draft that follows your firm’s templates and conventions.
Firm templates - 04
Review
You see every statement with its source, and proposed edits against the original text.
Redlining
§ 2Comparison
General AI guesses. In law, that is not enough.
General-purpose language models write convincingly, but without grounding in sources. They make up sections, confuse repealed and current wording, and cannot tell when they are unsure.
| General AI chatbot | Lexiqon | |
|---|---|---|
| Where the answer comes from | Whatever the model memorised in training | A verified base of legislation and case law, with a citation for every statement |
| Version in force | Often mixes old and current wording | Uses the wording in force on the date you specify |
| Structure of the law | Reads text as a stream of words | Knows the act – section – subsection hierarchy and links to case law |
| When unsure | Answers anyway | Says it found no support and gives no answer |
| Where your data lives | With a foreign provider, outside your control | In a separated environment, in the cloud or on your premises |
| Language and legal system | Mostly English and common law | Built for Czech and the continental legal system |
§ 3Technology
What makes the answers reliable.
The language model is just one layer. Accuracy comes from what surrounds it.
Search by meaning and by links
It finds provisions that are related in substance, not just the ones that repeat the same words.
hybrid RAG · vectors + graph
A check before every answer
Before you see an answer, the system confirms that every statement has a source, matches the wording in force and reaches the required level of confidence.
guardrails · citation verification
No dependence on one model
The language model can be swapped. You are not tied to one vendor or one cloud.
model-agnostic architecture
§ 4Security
Client confidentiality stays intact.
Your clients’ data stays in the environment you choose.
Separated data for every client
Each firm works in its own isolated environment, with role-based access control.
No training on your documents
Case files and queries are never used to train models, ours or anyone else’s.
Cloud or your own servers
Use it as a service with no infrastructure investment, or as a fully isolated installation on your premises.
A record of every answer
You can trace which sources an answer came from, in which version, and when.
§ 5FAQ
Frequently asked questions
Is Lexiqon a chatbot?
Not in the usual sense. It does not answer from a language model’s general knowledge, but from a verified base of legislation and case law. Every statement has a source you can open.
Which sources does it use?
Official sources of Czech law — legislation from eSbírka, Constitutional Court decisions from the NALUS database. It also works with historical versions, so it can answer as of a given date.
What if it does not know the answer?
It says so. If it finds no support in the sources for a statement, it gives no answer and shows what it did find.
Does it replace a lawyer?
No. It takes over research and checking, so you have more time for strategy and clients. Decisions and responsibility stay with you.
Will you train on our documents?
No. Documents and queries stay in your separated environment and are never used to train models.
What does a demo look like?
A short online meeting where we take a question from your practice from input to a sourced answer. You do not need to share any client data.
§ 6Contact
Book a demo.
Tell us what you work on and what you would like to try. We will reply by email and suggest a time.
- A demo on a question from your practice
- No client data shared
- Cloud or on-premise deployment
Or write to us directly