Owens Corning

I'll verify the company's profile before writing.

Company overview. Owens Corning (NYSE: OC) is a publicly traded Delaware corporation headquartered at One Owens Corning Parkway, Toledo, Ohio, founded in 1938. It reports roughly 25,000 employees across 31 countries and posted net sales of approximately $11.0 billion in 2024 and $10.1 billion in 2025 (SEC Form 10-K, filed Feb. 25, 2026). It is an operating company, not a subsidiary or shell licensor.

Products / operations. Owens Corning manufactures building and construction materials. Following its $3.2 billion acquisition of Masonite International in May 2024 and the divestiture of its glass reinforcements (Composites) business in 2025, it operates three reporting segments: Roofing (laminate and strip asphalt shingles, roofing components, oxidized asphalt); Insulation (fiberglass batts, loosefill, spray foam, foam sheathing, pipe insulation, stone wool and cellular glass products under brands including PINK Next Gen FIBERGLAS, FOAMULAR, FOAMGLAS and Paroc); and Doors (residential interior and exterior doors and door systems from the Masonite business). Sales are concentrated in North America, with roughly 80% of revenue from the United States.

Patent-litigation posture. The tracked data show a single case, in which Owens Corning is a defendant and never a plaintiff. That is the classic profile of an operating company being attacked rather than an active two-way litigant or an NPE. The suit was filed in the U.S. District Court for the Northern District of Ohio—Owens Corning's home venue, not a plaintiff-friendly district such as the Eastern District of Texas, where parallel Kirsch cases were filed against other manufacturers.

Notable case. Kirsch Research & Development, LLC v. Owens Corning et al., No. 1:20-cv-00901 (N.D. Ohio, filed April 24, 2020), named Owens Corning, Owens Corning Roofing & Asphalt, LLC and InterWrap Corp. Kirsch—an individual-inventor-started patent holder (per Stanford's NPE database) with no manufacturing operations—asserted U.S. Patent Nos. 8,765,251 and 6,308,482, covering synthetic roof underlayment, against Owens Corning's ProArmor, RhinoRoof and Titanium underlayment products. Kirsch also filed ITC Investigation No. 337-TA-1202. The district case was stayed pending the ITC matter and IPR2020-01389, an inter partes review Owens Corning filed against the '251 patent; Kirsch withdrew its ITC complaint in December 2020, and the parties settled. The Federal Circuit later affirmed a PTAB finding that the '482 patent claims were unpatentable in Kirsch v. GAF Materials (May 2024).