US Well Services, Inc. and US Well Services, LLC filed suit on February 15, 2023, in the Western District of Texas (Case No. 6:23-cv-00117), asserting seven US patents against Halliburton Co. The patents — including US9745840B2, US9611728B2, US8789601B2, US10408030B2, US9970278B2, US9410410B2, and US10337308B2 — cover electric-powered hydraulic fracturing pump systems, centralised monitoring and control fleets, cold-weather hydraulics packages, and pump-down systems. These technologies sit at the commercial heart of the oilfield services industry’s transition from diesel to electric fracturing.

The case closed on October 3, 2024, via a joint motion to dismiss filed by all parties, including counter-plaintiffs Halliburton Group Technologies, Inc. and Halliburton US Technologies, Inc. The court granted the motion and ordered that all infringement claims be dismissed with prejudice — meaning US Well Services is permanently barred from re-asserting these claims on the same grounds against these defendants. However, Halliburton’s declaratory judgment counterclaims of noninfringement, invalidity, and inequitable conduct were dismissed without prejudice, which means those patent validity questions were not adjudicated on the merits and technically remain open.

At 596 days, the duration suggests meaningful litigation activity — likely including claim construction briefing and early discovery — before the parties reached terms. The joint nature of the dismissal strongly suggests a negotiated resolution, though the public record is silent on financial terms or licensing arrangements. The asymmetric dismissal structure — with prejudice for plaintiff’s claims, without prejudice for defendant’s invalidity counterclaims — is a commercially significant detail that typically signals the plaintiff secured some form of commercial value while the defendant preserved optionality on patent validity.