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Headwater Research LLC sued AT&T Inc. et al. in the Eastern District of Texas, asserting U.S. Patents 8,589,541 and 9,215,613. The narrative identifies this as a related Headwater campaign case; U.S. 8,745,191 was not listed among the asserted patents.
Headwater sued Verizon entities for infringement. The jury found willful infringement of Claim 83 of the '541 patent and Claim 1 of U.S. Patent No. 9,215,613, awarding $175,000,000. The court later found the asserted patents unenforceable under implied waiver and entered final judgment for Verizon; cross-appeals are pending at the Federal Circuit.
Headwater asserted the '541 patent and the '613 patent against T-Mobile entities; T-Mobile counterclaimed for declaratory judgment of non-infringement and invalidity of both. Claim-construction order entered Jan. 20, 2025. The member case was consolidated into lead case 2:23-cv-00379-JRG-RSP; no trial outcome for the '541 patent was identified.
Google filed a declaratory-judgment action against Headwater Research LLC seeking non-infringement and/or invalidity. The case was reassigned to Judge Jon S. Tigar; no final disposition was identified.
Google LLC and additional real parties-in-interest petitioned for inter partes review of claims 1-23, 26, 41-60, 63, 64, 155-157, and 160-171 of the '541 patent. The Board's Oct. 1, 2025 Final Written Decision, combined with IPR2024-00943, held all challenged claims unpatentable. Headwater did not appeal.