Who needs prototype insurance?
Five audiences, and how prototype liability applies to each. This page describes how the coverage and the exclusions address their work. It is educational, not advice about whether a company should buy coverage.
Hardware startups
A hardware startup often has no finished goods at all: its entire output is prototypes, pilot units, and R&D units. Policies written for finished goods can exclude pre-commercial products, prototypes, and R&D units, so a startup whose entire output is prototypes can hold a general liability policy whose products half excludes everything it makes. Products-completed operations is priced on what you sell, how many units are in the field, and what they can do to a person or a building when they fail, and for a hardware company that half carries most of the exposure. General liability is written on an occurrence basis, so the policy in force when the injury happens is the one that responds, and letting products coverage lapse between rounds leaves a gap that is hard to close later.
Product designers and industrial designers
Product designers specify materials, dimensions, components, and manufacturing processes, and a specification that fails in the field can draw a claim that lands between product liability and professional liability. The professional services exclusion reaches you the moment you also install, integrate, or advise: general liability excludes claims arising from professional services, and a carrier can argue that a unit misconfigured during your install was a professional error rather than a product failure. Technology errors and omissions insurance answers the professional side. The two policies need wording that meets in the middle so a claim about a bad install has a home. Describe the product the way a claim would, and describe the timeline: what is a prototype, what is on pilot, what is sold, and when the next tranche ships.
Manufacturers and contract manufacturers
A contract manufacturer builds the unit, and the company that designed it decides what to build and when to ship it. A contract manufacturer policy covers its manufacturing errors. Your policy covers your design, your specification, and your decision to ship. The insurance exhibit in the manufacturing agreement usually asks each side to carry products coverage and name the other as additional insured, and the indemnity clause decides who pays first when a defect could be either a build error or a design error. Enterprise buyers ask for the same shape at higher limits: $1M per occurrence and $2M aggregate is the floor, $5M through an umbrella when your unit sits inside their facility, and a products-completed operations aggregate stated on the certificate.
Inventors and R&D teams
Inventors and R&D teams test new designs in the lab and in the field, and the units they test are prototypes by definition. Some forms remove coverage for any product not yet released for sale, and others define your products narrowly enough that a pilot unit on loan does not count as sold. If you loan, lease, or pilot hardware before you sell it, the definition of your product in the policy decides whether the products half is in play at all. ITAR and EAR and government-use exclusions appear in hardware policies too, according to the Risklytics guide, which cites a specialty broker deep tech insurance page. The practical step is the same as for a startup: tell the underwriter the timeline, what is a prototype, what is on pilot, and what is sold.
Demo and trade show exhibitors
A prototype running at a trade show is an operations exposure, and the venue will ask for a certificate before the booth opens, usually naming the organizer and the venue as additional insureds at $1M per occurrence. The unit has not been sold, so the products half is not in play, and a visitor who leans into a moving arm is a premises-and-operations claim on your policy. Tell the underwriter about the show schedule. A policy that was told you build in a lab may treat the demo as a surprise. A distributor or reseller adds another step: a vendors endorsement naming them for claims arising from your product arrives once you sell through a channel.
What this page relies on
- [1] Risklytics: product liability for hardware startups: https://www.risklytics.ai/guides/product-liability-for-hardware-startups/
- [2] IRMI: commercial general liability policy (CGL): https://www.irmi.com/term/insurance-definitions/commercial-general-liability-policy
- [3] IRMI: products-completed operations: https://www.irmi.com/term/insurance-definitions/products-completed-operations
- [4] IRMI: additional insured: https://www.irmi.com/term/insurance-definitions/additional-insured
- [5] IRMI: certificate of insurance: https://www.irmi.com/term/insurance-definitions/certificate-of-insurance