Headwater Research LLC v. Cellco Partnership, No. 2:23-cv-00352-JRG-RSP (E.D. Tex. Apr. 22, 2026)

Editorial Summary

AI-assisted editorial summary; not attorney-reviewed. Verify against the opinion itself before relying on any characterization of the holding.

After a jury found that Verizon willfully infringed Headwater's U.S. Patent Nos. 8,589,541 and 9,215,613 — both relating to background data technologies — and awarded $175 million in damages, the Court held a bench trial on Verizon's equitable defenses of estoppel and waiver. Considering the evidence adduced before the jury together with the bench-trial record, Chief Judge Gilstrap found that, under the doctrine of implied waiver, Headwater cannot enforce the asserted patents against Verizon. The opinion is a striking example of an equitable defense extinguishing a nine-figure verdict post-trial.