Post-closing claim notice in the Czech Republic: documents and

In-house counsel usually finds the problem weeks after closing: a warranty given in the share purchase agreement turns out to be false, an undisclosed liability surfaces, or a receivables figure the seller certified does not match the ledger. The claim window the agreement itself set is already running.

A post-closing claim notice is filed by the buyer against the seller under the warranty or indemnity clause the agreement provides for a specific breach. It is governed by the agreement's own notice mechanics and Czech contract law, and it must reach the seller, through the channel the agreement specifies, before the contractual claim period for that warranty expires.

This page sets out who files the notice and where it must go, the deadline that actually controls it, the document set a Czech seller will expect to see, and the point at which the matter is resolved, held open for more evidence, or lost because the window closed.

What triggers a post-closing claim notice?

A post-closing claim notice follows a breach of a warranty, an indemnity, or a covenant discovered after completion. The most common triggers are an overstated financial position, an undisclosed liability, or a defect in title to the shares or assets that the closing conditions did not catch.

The mechanism differs depending on whether the transaction was structured as a share or asset deal; the warranty package, and the register entries a report can check against it, are not identical in the two structures. A defect notice on an asset – a machine still subject to retention of title held by a third supplier, for instance – is checked against a different set of records than a warranty on the financial statements of a target company.

Once the claim period for a given warranty category lapses under the contract, the buyer's route to the seller for that item closes. General limitation periods under Czech civil law do not revive a claim the parties themselves timed by agreement; a contract termination clause triggered separately does not extend a warranty deadline that has already run.

When does this procedure apply to a Czech transaction?

The procedure applies whenever the transaction agreement is governed, wholly or in part, by Czech law and provides a warranty, indemnity, or contractual penalty mechanism surviving closing. It does not apply where the agreement is silent on post-closing remedies and the parties are left to general breach-of-contract rules only.

Three conditions usually decide whether the notice route is even open: the warranty or indemnity in question must still be within its stated survival period, the breach must fall within the category the clause describes, and the buyer must not have had actual knowledge of the matter at signing if the agreement excludes known issues. A contractual penalty clause, where the agreement carries one, runs on its own separate trigger and does not substitute for the notice itself.

A warranty survival period and a limitation period are not the same clock, and confusing them is the single most common reason a notice arrives too late to matter.

A Polish buyer's claim on an overstated receivables position was preserved four weeks before the contractual window closed, once the notice was resent through the delivery method the agreement specified rather than the ordinary email the buyer's team had first used (autumn 2025).

Corporate counsel who discover a discrepancy after closing rarely have the luxury of building the file slowly – the deadline runs whether the evidence is ready or not. LISTINA delivers a factual report on the register and document position behind a specific warranty within four to eight working days of instruction; write to info@listinafirm.com. Where the claim proceeds to a dispute, representation is provided by a collaborating advocate.

What is the route, and what is the deadline?

The route runs from the discovery of the breach to a formal notice delivered through the channel the agreement names, followed by a review period the seller is given before the matter escalates. The deadline is contractual, not statutory, and it is the single fact that decides whether the claim exists at all.

• Buyer identifies the breach and the specific warranty or indemnity clause it falls under.
• Buyer drafts the notice, quantifying the claim or stating a reasoned estimate.
• Notice is delivered through the method and to the address the agreement specifies, before the claim period expires.
• Seller reviews and responds within the period the agreement allows.
• Unresolved claims move to the dispute mechanism the agreement provides – expert determination, arbitration, or court.

The clock is contractual: once the claim period stated for that warranty category lapses, the notice cannot be revived by invoking general limitation rules. A notice sent through the wrong channel, or to an address the agreement no longer names, is treated, as a rule, as not sent at all.

What must the notice file contain?

The file must identify the breached clause by reference to the agreement, describe the breach in factual terms, and attach the documents that support it. A notice that states a conclusion without the underlying record is the most common ground on which a seller disputes it.

• Identification of the specific warranty, indemnity, or covenant clause said to be breached.
• A factual description of the breach and, where possible, its quantified effect.
• Supporting documents: financial records, contracts, register extracts, correspondence relevant to the claim.
• A calculation of the amount claimed, or a reasoned estimate pending final quantification.
• Confirmation that the notice period and delivery method the agreement requires have been met.

The document set overlaps substantially with what a diligence request list already gathered before signing – the same registers, the same category of contracts, checked again against the position as it stood at closing rather than before it.

A notice built entirely on documents the buyer already held at signing invites the seller's first objection: that the matter was known, not discovered.

Where the underlying asset or counterparty sits outside the Czech Republic, the file often needs a register position confirmed on the other side of the border before the notice goes out. For cross-border sellers, particularly where the counterparty sits in Austria, that position is often more efficiently confirmed through a structure report for the Austrian side than assumed from the signing file. Write to info@listinafirm.com to scope the report against a specific warranty clause.

Decision point: act, hold, or let the window close

Three positions are open once a discrepancy surfaces: file the notice now on the evidence in hand, hold and gather more evidence while the deadline still allows it, or accept that the window has closed and the claim is lost. The choice is driven entirely by how much of the claim period remains.

• Evidence is complete and the deadline is more than four weeks away → file the notice now → buyer's counsel → before the contractual claim period expires.
• Evidence is incomplete and the deadline is more than four weeks away → commission a factual report on the specific register or document gap → buyer, with the report provider → before drafting the notice.
• Evidence is incomplete and the deadline is under two weeks away → file a reasoned notice preserving the claim, then supplement it → buyer's counsel → before the deadline, supplement afterward if the agreement allows.
• Deadline has already passed → assess whether a separate ground survives, such as fraud or wilful concealment → buyer's counsel → no contractual deadline applies, general rules take over.

Whether a given breach meets the materiality threshold the agreement sets, or how a court or arbitrator will weigh a disputed calculation, is a legal question for the advocate handling the claim. A factual report can confirm what the registers and the documents show as of a given date; it does not predict how that record will be weighed in a dispute.

Waiting for more certainty has its own cost: the deadline runs regardless of how complete the file is, and a notice delivered one day after the contractual period ends is, as a rule, treated by Czech courts as no notice at all.

Frequently asked questions

Who may file post-closing claim notice?

The party the warranty or indemnity clause protects – ordinarily the buyer – may file the notice against the seller. The right exists only because the transaction agreement provides it; there is no general statutory right to a post-closing claim notice independent of the contract.

What is filed with it?

The notice itself, identifying the breached clause, together with the documents supporting the claim: the relevant financial records, contracts, register extracts, and correspondence. A calculation of the claimed amount, or a reasoned estimate, is expected even where final quantification is still pending, and the notice period and delivery method are read from the agreement each time.

What is the deadline?

The deadline is the claim period the transaction agreement itself sets for the relevant warranty category, typically running from closing or from the date the breach was, or should have been, discovered. General Czech limitation periods do not extend a shorter window the parties have contracted.

Why is it rejected?

Most rejections turn on form, not substance: the notice arrived after the claim period, through a channel the agreement did not specify, or without a clear reference to the breached clause. A common misconception is that an email to the seller's usual contact is sufficient regardless of what the agreement requires; where the agreement names a specific method, that method controls.

LISTINA produces factual reports from documents and public registers. It does not provide legal advice and does not represent parties. Where a matter requires representation before a Czech court or authority, it is handled by a collaborating advocate.

Adam Pospíšil works on deals and corporate structure.

A notice that misses the deadline cannot be refiled under a longer clock – the contract, not the calendar, decides. LISTINA delivers the factual report behind a specific warranty or indemnity claim, drawn from the transaction file and the relevant registers, within four to eight working days of instruction; write to info@listinafirm.com. Representation, if the claim proceeds to a dispute, is provided by a collaborating advocate.