The Chemours Company, in a press release, called the decision by the U.S. Court of Appeals for the D.C. Circuit regarding Environmental Protection Agency’s Significant New Alternatives Policy (SNAP) program Rule 20 disappointing.

The federal court yesterday ruled the EPA cannot require companies to replace potent heat-trapping chemicals, dealing a blow to part of the Obama administration’s climate change legacy.

The court found the EPA exceeded its authority under the Clean Air Act with the 2015 rule that eliminated some uses for hydroflurocarbons and approved certain replacements that would not deplete the ozone.

Chemours said the company believes EPA properly used its existing authority under the Clean Air Act and followed the required process.