Glossary
LiabilityUpdated Sep 23, 2026What Is a Warranty Period in a Contract?
A warranty period is the length of time during which one party's promises about the quality of goods or work apply — for example, that goods will be free of defects for 12 months. If no period is stated, it is unclear when claims can be made; a short one can end before problems appear.
Why it matters
A warranty with no stated period leaves open when claims can be made. A short one can end before problems usually appear.
How common is it?
In the 510 public-company commercial contracts of the CUAD dataset (The Atticus Project, CC BY 4.0), 75 (14.7%) contain a stated warranty period.
Among contract types with at least 20 contracts in the set, it shows up most in distribution agreements (19 of 32), maintenance agreements (9 of 34) and development agreements (5 of 29).
These are larger-company deals, not a sample of every contract — a reference point, not a rule. Full method: /data/cuad.
What to watch for
- A start date tied to delivery when use starts much later.
- Remedies limited to repair or replacement at the seller's choice.
- No period stated at all.
A realistic example
A bakery buys an oven with a 90-day warranty from delivery. Installation is delayed two months, and the oven fails in its first month of use — outside the warranty.
What to ask for
- A period that starts at installation or acceptance, not at delivery.
- A clear remedy, including a refund if repair fails.
Related terms: limitation of liability · deemed acceptance · insurance clause
Related guide: How to review a vendor agreement
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Not legal advice. This is an educational definition of a common contract term. Details vary by jurisdiction — this page explains common U.S. usage. For high-stakes agreements, have a lawyer review the final version.