At the heart of the dispute is a legal battle between Johns Manville and its competitor, Chase Manufacturing, Inc., which does business as Thermal Pipe Shields (TPS). TPS sued Johns Manville in 2019, alleging that Johns Manville and its subsidiary, Industrial Insulation Group, LLC (IIG), disparaged TPS’s calcium silicate insulation product – known as Calsil. The case went to trial in April 2024, with a jury ultimately finding Johns Manville Corporation liable on TPS’s antitrust claim. The jury awarded $6,784,042 in damages, later remitted to $6,149,090. Under federal antitrust law, those damages were trebled, bringing the total to $18,447,270. The court also ordered Johns Manville to pay TPS’s attorneys’ fees and costs, adding another $3,810,021.64, for a total judgment of $22,257,294.60.
Johns Manville sues Liberty Mutual, Swiss Re over $22 million antitrust coverage
