Epilay, Inc.

Company overview. Epilay, Inc. is a private California corporation headquartered at 21175 S. Main Street, E1 Unit C, Carson, CA 90745 (Los Angeles area). California corporate registration records show the entity registered on September 27, 2002, with Kamlesh "Kamal" Doshi listed as registered agent and founder. It is privately held, raises no disclosed outside funding, and has no parent company identified in public sources. Third-party databases (Owler, AeroLeads) estimate fewer than 10 employees and under $1M in revenue, but these are unverified estimates and no company-confirmed headcount or revenue figure is public.

Products / operations. Epilay supplies woven and non-woven technical textiles and building-envelope products, describing itself as having 30+ years of polymer-industry experience. Its main line is synthetic roofing underlayment — products marketed under names including ProtecTite/Superior, Ultra, Platinum, PlasFelt, RU-80, RU-90, PlyStik/EpiStik peel-and-stick, and Weathertite (Epilay also manufactures for other brands, e.g. SUREDECK for Building Products of Canada). Beyond roofing it offers housewrap, waterproofing and weather-barrier products, weed-barrier fabrics, geotextiles and silt fence, privacy screens, spun-bond non-wovens, and packaging materials, serving construction, landscaping/agriculture, carpet and mattress, hygiene, automotive, and rubber markets. Intertek and Miami-Dade NOA filings list manufacturing locations in Umm Al Quwain, UAE and Gujarat, India.

Patent-litigation posture. Epilay is an operating company defending against patent assertions, not a litigant in its own right. The case data — 1 tracked case, 0 as plaintiff, 1 as defendant — shows it as a target. The single tracked suit, Kirsch Research & Development, LLC v. Epilay, Inc. (filed 2020-04-24, C.D. Cal.), was part of a broader parallel campaign; the same plaintiff also named Epilay in a companion Section 337 action at the ITC.

Notable cases / context. Kirsch Research & Development, LLC (Simi Valley, CA) is an inventor-controlled licensing entity that, in April 2020, sued roughly 16 roofing-underlayment manufacturers — including Atlas Roofing, CertainTeed, DuPont, GAF, Owens Corning, InterWrap, TAMKO, and Epilay — asserting U.S. Patents 6,308,482 and 8,765,251 on "reinforced roof underlayment." Most of those suits were filed in the Eastern District of Texas; the ITC investigation (337-TA-1202) covered the same underlayment technology, and several defendants (GAF, Atlas) filed IPRs challenging the patents. Epilay has separately been involved in USPTO trademark proceedings, including a TTAB dispute with Polyglass S.p.A. over Epilay's PLYSTIK mark.