3 known cases. View patent page →
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.