A statute of limitations and a statute of repose are both deadlines for filing a lawsuit, but they start from different events and behave differently. A statute of limitations starts when you discover your injury and can often be paused. A statute of repose starts when the defendant finished the act in question (completing a building, delivering a product, performing a procedure) and ends your right to sue after a fixed number of years, whether or not you’ve been hurt yet.
That difference sounds technical. It isn’t. It’s the reason some injured people have a live claim and others, through no fault of their own, don’t.
How a Statute of Limitations Works
A statute of limitations gives you a fixed window to file suit after a legal claim arises. For most personal injury cases that window runs somewhere between one and six years, with two to three years being typical. Contract disputes often get longer deadlines, especially for written agreements. Miss the deadline and the defendant can ask the court to throw the case out as time-barred.
What really matters is when the clock starts. In many situations it starts the moment the injury happens. But courts in most jurisdictions apply a “discovery rule” that delays the start until you knew, or reasonably should have known, about the harm and its cause. A surgeon who leaves an instrument inside a patient creates the injury on the day of surgery, but the patient may not feel anything for years. Under the discovery rule, the clock waits until the patient discovers the problem or has enough information that a reasonable person would have looked into it.
The clock can also be paused entirely. This is called tolling. Common reasons include the injured person being a minor, being mentally incapacitated, or the defendant actively concealing wrongdoing. If a defendant hides evidence of a defect that caused your injury, the limitations period may not run while the concealment continues; once the barrier is removed, the clock resumes.
One practical point catches people off guard. A statute of limitations is an affirmative defense. The court won’t enforce it on its own. The defendant has to raise it in the answer to the lawsuit or waive the right to use it. A late-filed case can technically proceed if the defendant never objects, though experienced defense lawyers almost never miss this.
How a Statute of Repose Works
A statute of repose looks similar on the surface but works very differently underneath. Instead of measuring time from your injury, it measures time from a specific act by the defendant. That act might be completing a building, delivering a product to its first buyer, or performing a medical procedure. Once the repose period expires, your right to sue is gone.
The most striking consequence is that a statute of repose can expire before you’ve been injured at all. If a state sets a ten-year repose period for construction starting from the date a building is substantially completed, and a hidden defect causes a collapse in year eleven, no one hurt in that collapse can sue the original builder. The deadline passed before the harm existed. This is harsh by design: it reflects a deliberate policy choice to give manufacturers, builders, and other potential defendants a guaranteed end to their liability exposure.
Unlike a statute of limitations, a statute of repose generally cannot be paused or extended. The discovery rule doesn’t apply. Tolling for age, incapacity, or concealment typically doesn’t apply either. Courts have characterized statutes of repose as creating a substantive right to be free from liability after a set time, not merely a procedural time limit. That distinction matters because procedural rules bend more easily than substantive ones. The U.S. Supreme Court reinforced this view in CTS Corp. v. Waldburger, saying statutes of repose “effect a legislative judgment that a defendant should be free from liability after a legislatively determined amount of time.”1Justia Law. CTS Corp v Waldburger, 573 U.S. 1 (2014)
Key Differences at a Glance
The two deadlines share a goal of preventing stale lawsuits but reach it through different mechanisms.
- What starts the clock. A statute of limitations starts when you discover (or should discover) your injury. A statute of repose starts when the defendant completes the relevant act, regardless of any injury.
- Whether the clock can be paused. A statute of limitations can be tolled for minority, incapacity, fraud, and other recognized reasons. A statute of repose generally cannot be tolled except through specific legislative carve-outs.
- Whether the discovery rule applies. Yes for limitations. No for repose.
- How it’s raised. A statute of limitations is an affirmative defense the defendant must assert or lose. A statute of repose extinguishes the underlying right rather than just the remedy, and operates more like an absolute bar.
- Whether it can expire before injury. No for limitations, since the injury triggers the clock. Yes for repose, since the defendant’s act triggers it.
When Both Apply to the Same Claim
In practice, you often face both deadlines on the same claim, and the shorter one controls. A worked example makes this concrete.
Suppose a jurisdiction has a ten-year statute of repose for new construction, starting from the date of substantial completion, and a three-year statute of limitations for personal injury, starting from discovery of the injury. A building is completed on January 1, 2015. On February 1, 2026, a balcony collapses due to a hidden structural defect and injures someone. The injured person discovers the injury and its cause immediately, so under the limitations clock alone they have until February 1, 2029, to file.
But the repose clock started on January 1, 2015, and ran out on January 1, 2025, more than a year before the collapse. The claim against the original builder is dead on arrival. The statute of repose extinguished the right to sue before the injury occurred, and no amount of prompt filing changes that result.
The reverse scenario matters too. If the collapse happened on June 1, 2020 (five years after completion), the repose period hasn’t expired. But if the injured person waits until 2025 to file, the three-year limitations period has run. Both deadlines are real, both are independent, and you need to clear both. The statute of repose sets the outer boundary of all possible liability; the statute of limitations sets a shorter deadline inside that boundary once you know you’ve been hurt.
Where Statutes of Repose Commonly Apply
Not every type of lawsuit involves a statute of repose. These statutes cluster in industries where long delays between an act and a resulting injury are common, and where defendants face disproportionate risk from indefinite liability exposure.
Construction
Construction is the most common context. Nearly every state has a construction statute of repose that begins running when a building or improvement is substantially completed. Lengths vary widely by state, from as short as four years to as long as fifteen. After the period expires, the builder, architect, and engineer can no longer be sued for defects in the original work, even if a dangerous flaw stays hidden for years.
Medical Malpractice
Many states impose a repose period on medical malpractice claims that runs from the date of the treatment or procedure, typically in the range of four to ten years. The statute of limitations still applies within that window and usually gives you two to three years from when you discover the malpractice. The statute of repose acts as a hard outer boundary. If you don’t discover a surgical error for twelve years and the repose period is ten, you’re out of luck regardless of how reasonable your delay was. Some states carve out exceptions for foreign objects left in a patient’s body, but specifics vary.
Product Liability
Some states set repose periods for product liability claims, running from the date a product was first delivered to a buyer. The concept sometimes overlaps with a product’s “useful safe life,” the idea being that a manufacturer shouldn’t be liable for harm caused by a product that has outlived its expected safe lifespan. Product repose periods tend to fall in the range of ten to fifteen years from first delivery. A few states allow rebuttal if the manufacturer expressly warranted the product for a longer period or intentionally concealed a known defect.
General Aviation
At the federal level, the General Aviation Revitalization Act of 1994 created an eighteen-year statute of repose for claims against manufacturers of general aviation aircraft. The clock starts when the aircraft is delivered to its first buyer or lessee.2GovInfo. General Aviation Revitalization Act of 1994 For replacement parts, the eighteen-year period starts when the part is installed.
Narrow Ways to Overcome a Statute of Repose
The whole point of a statute of repose is finality, so exceptions are narrow. They do exist.
Fraudulent Concealment
Some jurisdictions recognize an exception when the defendant actively concealed the defect or wrongdoing that led to the injury. This is not the same as simply failing to disclose. Courts typically require proof that the defendant took affirmative steps to hide the problem, such as falsifying inspection records or covering up a known design flaw. Mere silence usually isn’t enough. Where the exception exists, it may allow a plaintiff to file within a shorter window (often two years) after discovering the fraud, even if the repose period has technically expired. Whether your state recognizes this exception, and how it defines affirmative concealment, can make or break a case.
Legislative Carve-Outs
Because statutes of repose are creatures of legislation, only the legislature can create exceptions. Some states have carved out specific scenarios: claims involving minors injured before reaching adulthood, latent disease caused by long-term exposure to a defective product, or injuries where the defect was not discoverable by any reasonable means within the repose window. These carve-outs vary enormously by state.
Federal Environmental Law Has Limited Reach
For injuries caused by exposure to hazardous substances, federal law under CERCLA establishes a discovery rule that overrides state statutes of limitations. Under 42 U.S.C. ยง 9658, the limitations period for state-law personal injury or property damage claims starts on the date you knew or should have known the harm was caused by the hazardous exposure, even if state law would have started the clock earlier.3Office of the Law Revision Counsel. 42 U.S. Code 9658 – Actions Under State Law for Damages From Exposure to Hazardous Substances Whether that federal rule also reaches state statutes of repose is a separate question, and the Supreme Court answered it in 2014. In CTS Corp. v. Waldburger, the Court held that CERCLA’s preemption applies only to statutes of limitations, not statutes of repose, because the statute specifically references “statutes of limitations” and never mentions repose.1Justia Law. CTS Corp v Waldburger, 573 U.S. 1 (2014) For toxic exposure cases, that means a state’s statute of repose can still bar your claim even when federal law would have extended your limitations deadline.
If You Think You Have a Claim
The interaction between these two deadlines is where most people get tripped up. You might know you have three years to file a personal injury claim, but if a statute of repose has been running since the building was finished or the product was sold, your actual window may be much shorter than you think. The repose deadline isn’t something you’d naturally track, because it has nothing to do with your injury. By the time you learn about it, the door may already be closed. If your claim involves construction, a medical procedure, a manufactured product, or environmental exposure, check whether a statute of repose applies before you assume you have the full limitations period to work with.