Chase Manufacturing v. Johns Manville Corporation, No. 22-1164 (10th Cir. 2023)Annotate this Case
For decades, Johns Manville Corp. ("JM") was the sole domestic manufacturer and supplier of calcium silicate (or “calsil”), a substance used to make thermal pipe insulation. In March 2018, Chase Manufacturing, Inc. (doing business as Thermal Pipe Shields, Inc., or "TPS") challenged JM’s monopoly status by entering the calsil market with a superior and less expensive product. JM responded by threatening distributors that it would not sell to them if they bought TPS’s competing calsil. By August 2021, more than three years after TPS’s market entry, JM retained over 97% of the domestic calsil market. TPS sued under the Sherman Act, alleging that JM had unlawfully: (1) maintained its monopoly; and (2) tied the availability of its insulation products to distributors’ not buying TPS’s calsil. The district court granted summary judgment for JM. Though the Tenth Circuit affirmed some of the district court’s rulings, it held that the district court erred in finding no genuine issues of material fact on whether JM unlawfully maintained its monopoly after TPS’s market entry. The case was remanded for further proceedings.
The court issued a subsequent related opinion or order on October 25, 2023.