Product Liability Lawyer in Phoenix, Arizona

Three Legal Theories: Strict Liability, Negligence, and Warranty

Arizona's product liability statutes begin at A.R.S. § 12-681 and continue through § 12-689. Section 12-681 defines a "product liability action" broadly: any action brought against a manufacturer or seller of a product for damages for bodily injury, death, or property damage caused by, or resulting from, the manufacture, construction, design, formulation, installation, preparation, assembly, testing, packaging, labeling, sale, use, or consumption of a product, or from a failure to warn of a danger, or from a failure to provide adequate instructions.

That single definition covers three distinct theories, and a claim can rest on more than one at the same time.

Strict liability asks a question about the product, not about the company's conduct. If the product was in a defective condition unreasonably dangerous when it left the defendant's control, and the defect caused the injury, liability can attach even if the manufacturer used reasonable care. This matters enormously in practice. You do not have to reconstruct what happened inside a factory or a design meeting to prove that a component failed in normal use.

Negligence asks about conduct: whether the manufacturer, designer, or seller failed to use reasonable care in designing, making, inspecting, testing, labeling, or distributing the product. Negligence theories often carry the claim when the story is about what a company knew and ignored — earlier failure reports, internal testing that was cut short, a supplier change that skipped qualification.

Warranty theories rest on promises. An express warranty is what the company actually said about the product in its manual, packaging, or advertising. The implied warranty of merchantability, drawn from Arizona's version of the Uniform Commercial Code, is the unwritten promise that a product is fit for the ordinary purpose it is sold for. A ladder that collapses under a rated load and a battery that ignites while charging normally are both failures of ordinary fitness.

We evaluate product liability claims across all three theories and, where appropriate, coordinate with engineering and medical experts to determine which one the physical evidence actually supports.

The Three Defect Types, With Everyday Examples

Nearly every product case is argued as one of three defect types. Knowing which one you are describing changes what evidence matters and who has to be deposed.

A design defect means the entire product line is dangerous as designed. Every unit that left the factory is exactly what the engineers drew, and the drawing itself is the problem. A vehicle whose roof structure crushes into the occupant space in a rollover, a heater with no tip-over shutoff, a child's product with a gap that traps a limb, a machine whose guard can be defeated by ordinary use — these are design questions. The core inquiry is whether a reasonable alternative design existed that would have reduced the risk without destroying the product's utility or making it unaffordable. That is an engineering argument, and it is usually decided by experts on both sides examining feasibility, cost, and what competitors were already doing.

A manufacturing defect means this particular unit deviated from its own specification. The design was fine; the build was not. A weld that was never completed, a batch of bolts below spec hardness, contamination in a molded part, a battery cell with a separator flaw, a tire built with a contaminated belt interface that later separates at speed. Manufacturing defect cases turn on the physical item, which is exactly why preservation matters so much. A metallurgist or materials engineer examining the failed part can frequently show that it did not match the manufacturer's own drawings or process requirements.

A warning or instruction defect means the product was made as designed and built correctly, but the company failed to warn about a non-obvious risk or failed to give adequate instructions for safe use. The key word is non-obvious. Arizona does not require a warning that a knife is sharp. It is a different matter when a medication carries an interaction risk that is not disclosed, when a power tool can kick back in a foreseeable use that the manual never mentions, when a lithium battery must not be charged with a third-party charger and nothing says so, or when a chemical's protective-equipment requirements appear nowhere on the label. Warning cases also include instructions that are technically present but buried, unreadable, or contradicted by the product's own design.

A single incident often supports more than one theory. A scooter battery fire can be argued as a design defect in the pack architecture, a manufacturing defect in a specific cell, and a warning defect in the charging instructions all at once, and the physical inspection determines which theory survives.

Who Can Be Liable: The Chain of Distribution and Arizona's Seller Protections

A product reaches a consumer through a chain, and Arizona's statutes address liability at several points in it.

• The manufacturer of the finished product is the primary defendant in most claims. It controlled the design, the specifications, the testing program, and the warnings.
• The component manufacturer can be liable where the defective part is the one that failed — a battery cell maker, a brake supplier, a valve or fastener producer. Component cases frequently involve a foreign supplier, which raises service and jurisdiction issues that must be worked out early.
• The distributor or wholesaler that moved the product into Arizona commerce can be named, particularly where the manufacturer is insolvent, dissolved, or beyond practical reach.
• The retailer that sold the item can be named as a seller within the meaning of § 12-681, including in many cases an online marketplace that functioned as the seller of record.
• Others in the chain can matter depending on the facts, including an installer, a rebuilder or remanufacturer, or a company that placed its brand on a product made by someone else.

Arizona then layers on protections for sellers who did nothing but sell. A.R.S. § 12-684 provides an indemnification structure: where a seller is sued in a product liability action for a product it did not manufacture, the manufacturer is generally required to indemnify that seller for reasonable costs of defense and any judgment, provided the seller did not alter the product, did not provide the defective plans or specifications, and did not make an express warranty that was breached and is independent of the manufacturer's. A.R.S. § 12-683 also supplies statutory defenses, including where the defect arose from a plan or design the seller was required to follow, or where the product was altered or modified after leaving the defendant's control in a way that caused the harm.

The practical result is not that retailers are immune. It is that naming the correct manufacturer, and identifying it accurately down to the exact model, production date, and component supplier, is one of the most important early tasks in the case. That identification usually comes off the product itself — a data plate, a mold code, a lot number, a DOT code on a tire sidewall.

Product Categories That Generate Arizona Claims

Product claims are not limited to any one industry. These are the categories that come up most often, described as categories rather than as any promise about a particular case.

• Vehicles and vehicle components. Airbags that fail to deploy or deploy without cause, seat backs that collapse rearward, seat belt retractor and buckle failures, fuel system integrity in a crash, steering and brake component failures, and roof crush in a rollover. Where a crash sequence was survivable but the occupant protection failed, the analysis overlaps with our rollover accident page.
• Tires. Tread and belt separation, aged tires sold as new, and repair or mounting failures. Tire cases are highly physical: the DOT code, the wear pattern, and the separated components carry the analysis.
• Household appliances and consumer electronics. Space heaters, pressure cookers, dryers, and chargers, where fire and thermal injury dominate the damages picture. Burn mechanisms and treatment costs are covered on our burn injury page.
• Power tools and equipment. Missing or defeatable guards, unexpected start, kickback, and blade or bit retention failures.
• Children's products. Cribs, bassinets, strollers, car seats, toys with entrapment or ingestion hazards, and furniture tip-over.
• E-bike, scooter, and other lithium-ion battery products. Thermal runaway during charging or after impact damage, pack architecture without adequate cell isolation, and chargers mismatched to the pack. Battery-specific issues in electric vehicles are discussed in our blog post on electric vehicle accidents in Arizona.
• Industrial and construction equipment. Lifts, ladders, scaffolding, and machinery, where a workers' compensation claim and a separate third-party product claim can exist side by side.
• Medical devices and pharmaceuticals as a category. Implants, surgical hardware, monitoring devices, and drug labeling and interaction warnings, where federal regulatory approval status affects what theories remain available. Drug and device claims follow their own rules on warnings, deadlines, and preemption, and are covered in depth on our defective medical device and pharmaceutical page.

When the resulting harm is permanent — amputation, severe burns, brain or spinal injury — the damages analysis is the one described on our catastrophic injuries page, including life care planning and future earning capacity.

The Most Important Thing You Can Do: Preserve the Product

If you take one thing from this page, take this one. In a product case, the product is the evidence. Cases that would otherwise be provable are lost every year because the item was thrown away, repaired, returned to the seller, or handed over to the manufacturer's representative who came out to "inspect" it.

Preserve all of the following, exactly as they are, without cleaning, repairing, disassembling, or testing anything:

• The product itself, including every fragment, and the failed component even if it is burned, shattered, or unrecognizable. Do not let a repair shop discard the old part.
• Packaging, labels, tags, and any insert or safety sheet that came in the box.
• The manual and instructions, in the version you actually received.
• Proof of purchase: receipt, order confirmation, card statement, warranty registration, marketplace listing screenshots.
• The scene of the failure. Photograph it from multiple distances and angles before anything is cleaned up or a room is repaired.
• Anything connected to the product at the time: charger, cord, adapter, attachment, accessory, or aftermarket part.
• Fire debris, if there was a fire. Do not authorize cleanup or demolition until the scene has been documented and, where possible, examined.

Then apply three rules. Do not return the product to the seller or manufacturer, and do not accept a replacement in exchange for sending the failed unit back. Do not let anyone, including your own insurer's adjuster, take the item or perform destructive testing without a written protocol and an opportunity for your side to have an expert present. And send a written preservation demand to everyone in the chain as early as possible — the loss of evidence by a party who was on notice is itself a significant issue in litigation.

We evaluate product liability claims and, where appropriate, coordinate with engineering and medical experts for a joint inspection under an agreed protocol so the item is examined once, properly, with all sides present.

Recalls: What They Prove and What They Do Not

People often assume a recall settles the case, and just as often assume that the absence of a recall ends it. Neither is correct.

What a recall can do is helpful. It shows the manufacturer or a regulator identified a hazard in that product or production range. It creates a paper trail — the defect notice, the remedy described, the population of affected units, the dates. It can support a claim that the company knew about the risk, and it can help pin down whether your unit falls within the affected lot. Recall notices from the National Highway Traffic Safety Administration for vehicles and tires, and from the Consumer Product Safety Commission for consumer goods, are public and worth checking by model and serial number.

What a recall does not do is decide liability. A recall is not an admission that the product caused your specific injury, and causation still has to be proven. The scope may not include your unit's production window. The described defect may be a different failure mode than the one you experienced. And manufacturers routinely argue that notice was sent, that a free remedy was available, and that the owner's failure to bring the product in is the reason the injury occurred — a comparative fault argument, not a defense that ends the claim.

The absence of a recall proves even less. Most defective products are never recalled. Recalls typically follow a pattern of reported failures, and someone has to be the early report. A claim can be fully viable on physical evidence and expert analysis with no regulator ever having weighed in.

The practical step is to check for a recall by exact model and serial or lot number, preserve the notice if one exists, keep any repair or remedy documentation, and — most importantly — not treat the recall search as the thing that decides whether you have a case.

Defenses to Expect: Misuse, Alteration, Assumption of Risk, and State of the Art

Product defendants are well funded and well prepared, and the defenses are predictable. Knowing them in advance is part of why preservation and early documentation matter.

Misuse. The manufacturer will argue the product was used in a way it was not intended to be used and that the misuse, not the design, caused the harm. The counter-argument is foreseeability: a use that is not authorized can still be entirely foreseeable, and a manufacturer generally must account for reasonably foreseeable use, including foreseeable careless use.

Alteration or modification. A.R.S. § 12-683 provides a defense where the product was altered or modified after leaving the defendant's control and the alteration caused the harm. This is why an unmodified, unrepaired product is worth so much more as evidence than one someone tried to fix. Note that ordinary wear, and modifications the manufacturer itself contemplated or a dealer performed, are different questions than a substantive change by the user.

Assumption of risk and comparative fault. Under the Arizona Constitution, assumption of risk and contributory negligence are questions of fact for the jury. Practically, that means a defendant's argument that you knew the risk usually goes to the jury as an allocation issue rather than a dismissal. Arizona's pure comparative fault statute, A.R.S. § 12-2505, then reduces recovery by the injured person's percentage of fault, but does not bar it — a person found 60 percent at fault can still recover 40 percent of the damages found. Arizona also allows the allocation of fault to non-parties, so expect the defense to point at a retailer, an installer, an employer, or another driver.

State of the art. Under A.R.S. § 12-683, a defendant may raise that the design or warning conformed with the state of the art at the time the product was first sold — the technical, mechanical, and scientific knowledge in existence and reasonably feasible for use at that time. This is a genuine defense in older-product cases, and it is met with evidence about what was actually known and feasible then, including what competitors were already doing.

Each of these is a factual fight resolved with documents, testing, industry standards, and expert analysis rather than with argument alone.

Deadlines: The 12-Year Statute of Repose and the Two-Year Limitations Period

Product cases have two separate clocks, and both can end a claim.

The statute of limitations. A.R.S. § 12-542 gives two years for personal injury and wrongful death claims. The clock generally starts when the cause of action accrues, and Arizona applies a discovery rule: accrual occurs when the injured person knows or, through reasonable diligence, should know of the injury and its cause. In a product case that distinction can matter, because it is not always obvious at the moment of injury that a product rather than an accident was responsible — a fire whose origin is unknown until an investigation finishes, or an implant whose failure is identified only during a later revision surgery.

The statute of repose. A.R.S. § 12-551 is the one people do not know about, and it can be harsher. It provides that a product liability action must be commenced within twelve years after the product was first sold for use or consumption, unless the cause of action was not discovered and could not reasonably have been discovered within that period. The statute also does not apply where the injury results from a defendant's negligence in providing a warning or instruction, from concealment of information, or from a misrepresentation about the product, and it does not apply where the action is based on an express warranty for a period longer than twelve years.

The practical consequence is significant. An appliance, a tool, or a vehicle component can be well past twelve years from first sale while still in ordinary daily use. Whether the repose statute or one of its exceptions applies to your facts is a legal question that has to be answered on the specifics — the date of first sale, what was discoverable and when, and whether a warning or concealment theory is available.

Other timing rules can also apply, including the notice-of-claim requirements in A.R.S. § 12-821.01 when a public entity is involved, and different rules for a minor's claim. Do not assume a deadline in either direction. Have the dates reviewed.

We evaluate product liability claims and can tell you which clocks apply to your facts. The consultation is free, these matters are handled on contingency with case costs advanced, and there is no fee unless there is a recovery. Call Saguaro Injury Law at (602) 217-0000. Other areas we handle are listed on our practice areas page.