Defendant
1 case as defendant.
DuPont de Nemours, Inc. (NYSE: DD) — commonly "DuPont" — is a publicly traded specialty-materials and industrial company headquartered in Wilmington, Delaware. The current entity was incorporated in 2015 as DowDuPont Inc.; following the 2019 spin-offs of Dow and Corteva, the remaining businesses were renamed DuPont de Nemours, Inc. It is an operating company, not an NPE. DuPont reported about $6.8 billion in continuing-operations net sales for fiscal 2025 and roughly 24,000 employees per its 2024 Form 10-K, before the November 2025 electronics separation. Market capitalization has recently been reported in the mid-$30 billion range.
Operations. After the November 1, 2025 spin-off of Qnity Electronics (semiconductor and interconnect materials) and the agreed sale of its Aramids business (Kevlar, Nomex) to Arclin, DuPont reports two segments. Healthcare & Water Technologies sells medical packaging, medical-device components, and reverse-osmosis and ion-exchange water purification products. Diversified Industrials supplies construction/building materials, aerospace and automotive adhesives and fluids, lubricants, and printing and packaging materials (brands include Tyvek and Tedlar). It divested its nutrition, mobility/materials, and Delrin businesses during 2021–2023.
Patent-litigation posture. DuPont appears once in the database — as a defendant, never as a plaintiff — consistent with an operating company defending against outside assertions rather than an active two-way litigant. The sole tracked matter is Kirsch Research & Development, LLC v. DuPont de Nemours, Inc. et al., No. 5:20-cv-00057 (E.D. Tex., Texarkana Division), filed April 24, 2020, in a plaintiff-friendly venue.
Context. Kirsch, a Simi Valley, California licensing vehicle tied to inventor Mark C. Strait and to licensee Kirsch Building Products (Sharkskin underlayments), sued DuPont as one of 16 roofing-underlayment defendants that day, asserting U.S. Patents 6,308,482 and 8,765,251 on reinforced synthetic roofing underlayment. The campaign also produced ITC Investigation No. 337-TA-1202 against DuPont and other respondents; defendants jointly petitioned for inter partes review of the '482 patent. DuPont's separate PFAS litigation exposure is not part of this tracked case. No merits determination is implied.
Kirsch asserted the '482 patent against DuPont entities. The case was consolidated with No. 5:20-cv-00058 and terminated by stipulated dismissal with prejudice on 2021-11-15.