CertainTeed Corporation

CertainTeed Corporation (also referenced in litigation as CertainTeed LLC) is a North American building-products manufacturer headquartered at 20 Moores Road, Malvern, Pennsylvania. Founded in 1904 as the General Roofing Manufacturing Company, it was renamed Certain-Teed in 1917 and has been a wholly owned subsidiary of Compagnie de Saint-Gobain S.A. of Paris since 1988. It is not separately publicly traded. Company materials cite more than 6,300 employees and more than 60 manufacturing facilities across the United States and Canada; a 2019 company release cited group sales of roughly $3.98 billion for 2018 (earlier releases cited ~$3.3 billion for 2015), but CertainTeed does not publish standalone audited financials as a Saint-Gobain unit.

It is an operating company, not a patent assertion entity. It manufactures and sells exterior and interior building products for residential and commercial construction, including residential and commercial roofing (asphalt shingles and low-slope systems), vinyl and fiber-cement siding, trim, fence, decking and railing, sheathing, building and technical insulation, gypsum board/drywall and finishing products, and commercial ceiling systems (mineral fiber, gypsum, metal suspension).

Litigation posture: CertainTeed appears once in the tracked data, solely as a defendant (0 plaintiff suits, 1 defendant suit) — the profile of an operating company defending against third-party patent claims rather than a two-way litigant or an asserter.

Notable case: Kirsch Research & Development, LLC v. CertainTeed Corporation, No. 3:20-cv-01024 (N.D. Tex., Dallas Division), filed April 24, 2020, asserting U.S. Patent No. 8,765,251 on synthetic roofing underlayments. Kirsch Research & Development (Simi Valley, California) is classified as a non-practicing entity in Stanford's NPE database (individual-inventor-started). A parallel Section 337 action, ITC Inv. No. 337-TA-1202, was filed the same day against CertainTeed and other roofing/underlayment suppliers, and the district court stayed proceedings pending the ITC matter in September 2020. Public reporting indicates closely related Kirsch underlayment claims were later invalidated at the PTAB, with the Federal Circuit affirming in May 2024.