Notice of defects in the Czech Republic: documents and forms

A Czech supplier delivers goods that turn out flawed only once the owner puts them into use, weeks after handover. The purchase agreement says the complaint must be made "without undue delay" and nothing more. The owner drafts an email, attaches photographs, and waits – unsure whether the clock already started at delivery, and unsure whether the form of the email itself will later be challenged.

Notice of defects is a factual declaration under Czech contract law that a delivered performance does not match the agreement. It must reach the counterparty in a form that can later be proven – written, dated, specific about the defect – and, as a rule, within the deadline the contract fixes or, absent one, without undue delay after discovery.

This page sets out who can file a notice of defects and where, the deadline that binds it, and the documents the file must contain before the matter goes further – deliberately leaving aside what any given notice will achieve.

What is a notice of defects, and when does it apply?

A notice of defects is the written step in which one party tells the other that a delivered good, completed work or performed service does not match the contract. It applies to sale, works and service agreements alike under Czech law, and what is tested first is not the outcome but the form in which the notice was made.

In Czech contract practice the notice is not itself a claim for damages or a demand for repair – it is the trigger that preserves the rights the contract or the applicable rules attach to a defective performance: repair, replacement, a price reduction, a contractual penalty, or, in some agreements, retention of title against removal of the goods until payment is made. Whether those rights survive depends on whether the notice was sent, to whom, and inside which period.

The same mechanism covers a defect in quality, a shortfall in quantity, and a defect in title – for instance where the goods sold turn out to be encumbered by a right of a third party the buyer did not know about. Whether the contract is between two businesses or involves a consumer changes some of the deadlines that follow, but not the basic requirement: the notice must identify the specific defect, not describe the performance in general terms as unsatisfactory. For the wider context of how such disputes proceed under Czech law, see the contracts and transactions practice overview.

Missing the period the contract sets for notifying a defect can end the right to invoke it outright – the deadline, once passed, is not something a later letter can restore.

Who can file, and does the deadline start on delivery or on discovery?

Either party to the contract can in principle send a notice of defects, but only the party receiving a non-conforming performance has a reason to. The deadline usually starts running not from the moment of delivery but from the moment the defect was, or reasonably should have been, discovered during an ordinary inspection.

This distinction matters because a foreign owner receiving goods through a freight forwarder, or accepting completed works through a local site manager, is often not the person who first notices the defect. The period does not pause because the decision-maker sits abroad; it runs against the party to the contract, and an internal delay in relaying information from the site to the owner is not treated as an excuse by a counterparty who later disputes timeliness.

Where the counterparty sits in another jurisdiction – a supplier in Romania, for instance – confirming the delivery date and the moment of discovery becomes part of the file itself, since the ordinary sources of proof differ from one register system to the next; see the overview of transactions in Romania for how such records are typically kept in that jurisdiction.

A representative – a local manager, a technical adviser, or an advocate – may send the notice on the owner's behalf, provided the authority to do so is documented. An unauthenticated notice sent by an unnamed person is one of the more common grounds on which a counterparty later disputes that a notice was given at all.

The date that matters is rarely the date on the delivery note – it is the date the defect became visible.

An owner who only learns of a defect once the goods are already in use is already behind the discovery clock. LISTINA reconstructs the delivery and discovery timeline from the available documents and delivers a factual report within five to eight working days; write to info@listinafirm.com. Where representation becomes necessary, it is handled by a collaborating advocate.

What is the route, and which deadlines bind it?

The route runs in three steps: send the notice inside the contractual or statutory period, keep proof of dispatch and receipt, and state the specific remedy claimed – repair, replacement, price reduction or withdrawal – either in the same notice or a follow-up communication. Each step carries its own deadline, and none of them automatically extends another.

• Identify the defect and fix the date on which it was discovered.
• Send the notice within the period the contract sets, or otherwise without undue delay.
• Keep proof of dispatch and, ideally, of receipt – post, e-mail with read confirmation, or a data-box message.
• State the remedy sought – repair, replacement, price reduction, withdrawal – in the notice or in a further separate communication.
• Track the counterparty's own response period, where the contract sets one.

A notice sent without proof of dispatch closes the route the moment the counterparty simply denies having received it – the burden of proof then falls back on the party that sent it, and reconstructing that proof afterwards is slower than keeping it from the start.

A German buyer of a Czech manufacturer restored a contractual penalty claim that looked lapsed only after e-mail server logs were retrieved to show the notice had in fact reached the supplier's mailbox inside the deadline (winter 2025). Where the counterparty disputes the notice or its content once it has been sent, the next step is described separately in objection and appeal after a notice of defects.

What must the document set contain?

The document set behind a notice of defects has four constant elements: the contract or order confirming what was agreed, delivery or acceptance evidence fixing the relevant date, a description of the defect specific enough to be checked, and proof that the notice reached the counterparty. Missing any one of the four weakens the file before it is tested by the other side or by a court.

• The contract, order confirmation or acceptance protocol that fixes what was agreed.
• The delivery note, handover protocol or invoice date establishing when performance occurred.
• Photographs, a technical report or an inspection record describing the defect.
• The notice itself, dated and specific about the defect claimed.
• Proof of dispatch and, where available, proof of receipt.
• Any correspondence in which the counterparty acknowledged or disputed the defect.

None of these documents by itself proves that a defect existed in the legal sense; together they let a collaborating advocate or a court test whether the notice was timely and specific enough. Where one element is missing – most often proof of dispatch – reconstructing it later from indirect sources, such as courier records, server logs or the supplier's own confirmation, is possible but takes longer than producing it at the time performance was received.

A defect described only as "the goods are not fine" is not a notice of defects – it is a complaint waiting to be dismissed as vague.

A document set missing proof of dispatch is a weaker file the moment the counterparty denies receiving anything. LISTINA assembles and verifies the delivery, notice and correspondence records into a factual report, delivered within five to eight working days; write to info@listinafirm.com. Any representation that follows is provided by a collaborating advocate.

Act, wait, or stop – how to decide

Acting now makes sense whenever the deadline in the contract or the statutory period has not yet run and the document set can still be assembled. Waiting makes sense only where the defect has not yet stabilised – a crack that may still be developing, for example. Stopping is the right call once the period has already lapsed without a notice on record.

• Defect discovered, period still open → send the notice in writing → the owner or an authorised representative → before the contractual or statutory period expires.
• Notice sent, counterparty silent → follow up in writing, state the remedy → the owner → within the response period the contract sets, or without undue delay.
• Notice disputed by the counterparty → assemble the document set, involve an advocate → the owner with a collaborating advocate → before any court deadline attached to the remedy claimed.
• Period already lapsed, no notice sent → assess whether any other basis for a claim survives → advocate → no later document restores the lapsed period.

From documents and registers alone we can establish what was delivered, when, and what the contract required – not whether a court will treat a given description of a defect as specific enough, nor whether a given delay counts as undue. Those are legal assessments a collaborating advocate makes on the factual report we produce.

Once the period lapses without a notice on record, no later document can put the right back on the table – the correspondence trail simply confirms that the route is closed. An Austrian buyer found exactly this: a contractual penalty clause had already lapsed once the delivery record showed the notice had gone out three days past the agreed period (autumn 2025).

Frequently asked questions

What does notice of defects cost in time?

Sending the notice itself takes little time once the defect and the date of discovery are established, often no more than a working day. Assembling the supporting document set – delivery records, photographs, proof of dispatch – commonly takes longer, from a few days to two or three weeks depending on how many of the elements already exist. The contractual or statutory period does not pause while the file is being built.

Which form is used?

Czech law does not require a fixed form for a notice of defects unless the contract sets one. An oral complaint made in person is not automatically sufficient – if a dispute follows, proof that the notice reached the counterparty in a checkable form matters more than the wording used. A written notice, sent by post, by e-mail with confirmation, or through a data-box message, is the form that best survives a later dispute.

Is a representative required?

No representative is required to send a notice of defects; the owner can send it directly. Where a manager, technical adviser or advocate sends it instead, the authority to act on the owner's behalf should be documented, since an unauthenticated notice is one of the more common grounds on which a counterparty later disputes that it was given at all.

What if the party is abroad?

A foreign owner is bound by the same deadline as a domestic one; the period does not pause because a decision needs to travel across a border. In practice this means that fixing the date of discovery and the chain of internal reporting becomes part of the document set itself, particularly where the counterparty or the goods sit in another jurisdiction.

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.

An owner holding a defect that has not yet stabilised, or a deadline that is close to running out, is choosing between two costs: acting now or losing the right later. LISTINA produces a factual report on the delivery record, the contract terms and the correspondence trail, delivered within five to eight working days; write to info@listinafirm.com. Representation before a Czech court or authority, if it becomes necessary, is provided by a collaborating advocate.