A growing share of consumer products reach buyers through online marketplaces, with third-party sellers who may be foreign, undercapitalized, or untraceable. When one of those products ignites, collapses, or injures a child, the plaintiff often cannot serve the seller. That has pushed product liability counsel toward the platform. Whether the platform can be held strictly liable depends on whether the court treats it as a seller or distributor in the chain of distribution, or as a neutral service provider that merely hosts listings.
The Core Legal Question
Strict products liability in most states reaches those in the chain of distribution who sell or distribute a defective product, including retailers and distributors, regardless of fault. The platform's argument is that it never owned the product and is not a seller. The plaintiff's response is that the platform exercised the kind of control and received the kind of economic benefit that supports imposing the responsibility on it. Relevant facts include whether the platform stored the product in its warehouses, shipped it in its packaging, handled customer service and returns, set pricing rules or fees, and collected payment.
Courts have reached different conclusions. A California appellate court held in Bolger v. Amazon.com that Amazon was strictly liable for a defective laptop battery sold through its fulfillment program, reasoning that Amazon was a pivotal part of the chain of distribution and in a position to enforce safety standards. A Third Circuit panel reached a similar result under Pennsylvania law in Oberdorf v. Amazon, but that opinion was vacated when the court granted rehearing en banc, and the matter was later resolved without a precedential ruling. By contrast, a Fourth Circuit decision applying Maryland law concluded Amazon was not a seller for the product at issue. The pattern suggests that outcomes depend heavily on state law and the facts of the platform's involvement in the particular transaction.
Fulfillment Versus Pure Marketplace Listings
The strongest cases involve products that the platform fulfilled. When the platform stores, packs, and ships the item, it looks much more like a distributor. Pure marketplace listings, where the seller ships directly, present a harder argument, because the platform's role may be limited to connecting buyer and seller and processing payment. Identify which model applied, using the order confirmation, shipping labels, and the seller's account records. Early discovery should seek the platform's fulfillment agreements, its seller terms, and the data showing how the item was handled.
Section 230 and Other Defenses
Platforms frequently invoke Section 230 of the Communications Decency Act, arguing that claims based on seller listings treat them as publishers of third-party content. Courts have often rejected this defense where the claim is based on the platform's own conduct in distributing a physical product, rather than on the content of a listing. The distinction matters in the pleading. Frame the claim around sale, storage, shipment, and safety oversight, not around the accuracy of the product description, unless a separate misrepresentation theory is warranted.
Expect additional defenses, including contractual limitations in the platform's terms of service, arbitration clauses, and arguments that the plaintiff cannot prove the product was the one sold through the platform. Preserve purchase records, packaging, and the product itself. Establish chain of custody for the failed item, and obtain an engineering inspection before any destructive testing.
Regulatory Evidence
Federal product safety regulators have taken a position on platform responsibility. In 2024, the Consumer Product Safety Commission issued a decision treating Amazon as a distributor with respect to certain products fulfilled through its program, a ruling Amazon has challenged. Whatever its ultimate status, the decision and the underlying findings can serve as evidence of notice. Look also for recall notices, platform safety alerts, customer complaints, and internal quality reports about the product or seller. A pattern of reviews describing overheating or breakage supports a claim that the platform knew of the hazard.
Negligence and Alternative Theories
If strict liability is unavailable, consider negligence claims based on failure to vet sellers, failure to remove dangerous listings after complaints, and failure to warn. Some jurisdictions also recognize negligent undertaking when the platform assumes a safety role through testing or certification programs. Plead in the alternative, and seek discovery into the platform's safety processes, including how it handles consumer complaints and what steps it takes after notice of a hazardous product. See our product liability category for related warning and design analysis.
Practical Considerations
Venue and forum clauses can affect where the case is heard, and class or mass claims may share issues with individual cases. Coordinate with other counsel handling the same product where possible. For personal injury caused by e-bike or battery products sold through marketplaces, the potential defendants may include the foreign manufacturer, the importer, and the platform. Keep records of efforts to serve foreign defendants, since they support arguments for platform responsibility when the manufacturer cannot be reached. Insurance and settlement implications are discussed in our case law and settlements coverage.
Takeaways
- Determine whether the product was fulfilled by the platform or shipped by the seller.
- Plead the platform's role in distribution, not its role as a publisher of listings.
- Check your state's treatment of marketplace sellers before filing.
- Preserve the product, packaging, and order records, and document service attempts on the seller.