735 ILCS 5/2-2107
In a product liability action, punitive damages shall not be awarded against a manufacturer or product seller if the conduct of the defendant manufacturer, seller, or reseller that allegedly caused the harm was approved by or was in compliance with standards set forth in an applicable federal or State statute or in a regulation or other administrative action promulgated by an agency of the federal or State government responsible for the safety or use of the product, which statute or regulation was in effect at the time of the manufacturer's or product seller's alleged misconduct, unless the plaintiff proves by clear and convincing evidence that the manufacturer or product seller intentionally withheld from or misrepresented to Congress, the State legislature, or the relevant federal or State agency material information relative to the safety or use of the product that would or could have resulted in a changed decision relative to the law, standard, or other administrative action.
735 ILCS 5/2-2107