Filed in December 2022 in the Eastern District of Texas, Cobblestone Wireless, LLC v. T-Mobile (Case No. 2:22-cv-00477) is a patent infringement action targeting three of the United States’ largest wireless carriers — T-Mobile USA, AT&T (through multiple entities), and Cellco Partnership d/b/a Verizon Wireless — along with network infrastructure intervenors Nokia of America Corporation and Ericsson Inc. Cobblestone asserted four patents directed at core wireless network technologies: adaptive communication resource allocation (US10368361B2), beam-shape coverage cycling (US9094888B2), user-focusing for wireless systems (US8554196B2), and wireless device handoff between networks (US8891347B2).

On October 18, 2024 — approximately 22 months after filing — the court granted a joint motion to dismiss. Cobblestone’s claims against all defendants were dismissed with prejudice, permanently extinguishing those causes of action. Defendants’ and intervenors’ counterclaims and defenses were dismissed without prejudice, preserving their right to assert those positions in future proceedings. The asymmetric dismissal structure is consistent with a negotiated resolution in which the plaintiff agreed to relinquish its claims while defendants retained optionality on any invalidity or non-infringement arguments they had raised.

The 672-day duration suggests the case progressed well into claim construction or discovery before the parties reached resolution, though the public record does not disclose financial terms. The involvement of Nokia and Ericsson as intervenors — typically suppliers of the accused network infrastructure — signals that the technology at issue operated at a carrier-infrastructure level, raising the stakes beyond a single defendant. What remains unknown is whether licence agreements were executed and, if so, on what terms across the three carrier defendants.