Custom vs Mandatory Standard
Definition
Voluntary industry standards represent custom in the industry; regulatory standards (mandatory by law) set the legal floor. A product can violate custom without violating regulation, or meet both and still be found defective under Risk-Utility analysis.
- Custom
- Voluntary industry practice
- Mandatory standard
- Legal regulatory floor
- Relevant test
- Risk-Utility analysis
- Key point
- Meeting both does not preclude a defect finding
Common questions
If a manufacturer follows every applicable regulation, are they automatically protected from a design defect claim?+
No. Regulatory compliance is evidence of reasonable care but courts generally treat it as a floor, not a shield, so a product can still be found defective under risk-utility analysis if a safer feasible alternative design existed.
Why would a plaintiff's expert cite industry custom instead of a regulation?+
Custom shows what competent designers actually do in practice, which can be more persuasive on foreseeability and feasibility of an alternative design than a regulatory minimum that may lag behind current engineering capability.
Related terms
- Commercial Feasibility
- Whether the cost of the safer design, spread across expected production volumes, would have made the product unaffordable or unmarketable.
- Design Standard
- A document produced by a recognised body (ISO, ASTM, UL, EN, national authority) specifying minimum technical requirements for a product category. Meeting...
- Risk-Utility Calculus
- The balancing of expected harm (probability of injury multiplied by severity) against the burden of prevention (cost of the SAD plus any...
- Safer Alternative Design (SAD)
- A specific, concrete modification to a product that would have reduced the hazard in question while preserving the product's essential utility, and...
- Technical Feasibility
- The capacity to implement a design change with materials, processes, and knowledge available at the date the product was manufactured and sold.