InterWrap Corp.

InterWrap Corp. (also styled InterWrap, Inc.) was a manufacturer of extrusion-coated woven materials and multi-layer laminated reinforced plastic substrates. Founded in 1984 and headquartered in Vancouver, British Columbia, the company operated production and distribution facilities in the United States, Canada, India, and China. It reported 2015 sales of roughly US$250 million; a verified employee count is not available.

Products / operations. InterWrap's main line was synthetic roofing underlayment, sold under the Titanium and RhinoRoof brands (e.g., Titanium UDL/PSU self-adhered membranes). A second line was protective packaging for lumber and metal — the Duramet and WeatherPro brands — alongside industrial fabrics for water management, oil/gas, mining, and agriculture (RhinoMat, RhinoSkin) and construction specialties such as housewraps and facers. It also supplied private-label underlayments (e.g., DuPont RoofLiner).

Ownership. InterWrap was private-equity-backed, with Quad-C Management investing in November 2013. Owens Corning (NYSE: OC) agreed to acquire it for US$450 million on February 24, 2016, and completed the deal on April 21, 2016. InterWrap is therefore now a subsidiary of Owens Corning, which explains its Toledo, Ohio address in post-2016 filings.

Patent-litigation posture. InterWrap is an operating company, not an NPE. In the tracked data it appears in exactly one case and only as a defendant (0 plaintiff cases), consistent with a manufacturer absorbing third-party patent assertions. The case, Kirsch Research & Development, LLC v. Owens Corning et al., was filed April 24, 2020 in the Northern District of Ohio — Owens Corning's home venue, not a plaintiff-friendly district.

Notable case context. Plaintiff Kirsch Research & Development, a Simi Valley, CA entity, asserted synthetic underlayment patents (including U.S. Patent 8,765,251 and the '482 patent) against InterWrap and its parent, accusing ProArmor, RhinoRoof, and Titanium products. Kirsch also filed a parallel ITC Section 337 complaint (Inv. No. 337-TA-1202), naming InterWrap and roughly ten other underlayment makers. Owens Corning challenged one Kirsch patent in PTAB inter partes review; the disputes were ultimately settled.