Background
Aspen Networks, Inc. holds U.S. Patent No. 8,009,554, which covers the core technology that allows a mobile phone call to switch seamlessly between a Wi-Fi network and a cellular network — and back again — without dropping the connection. This hand-off technology underpins what the wireless industry calls Voice over Wi-Fi (VoWi-Fi), a feature now standard on virtually every modern smartphone that lets calls continue uninterrupted when a phone moves in and out of Wi-Fi range.
In December 2023, Aspen filed suit in the Eastern District of Texas, accusing Cellco Partnership — the legal entity that operates Verizon Wireless — of infringing the ‘554 patent through Verizon’s VoWi-Fi service. Aspen alleged that Verizon’s implementation of VoWi-Fi let the carrier provide uninterrupted calls to its customers while avoiding the substantial capital expense of deploying additional cellular towers. The Eastern District consolidated Aspen’s parallel suits against T-Mobile and AT&T for pre-trial proceedings, but the Verizon case proceeded to trial separately.
The Court’s Holding
After a jury trial in the Eastern District of Texas, the jury returned a verdict finding that Cellco Partnership (Verizon Wireless) infringed U.S. Patent No. 8,009,554 through its VoWi-Fi service. The jury awarded Aspen Networks $190 million in damages. The verdict form was entered on the docket on June 20, 2026.
The case was presided over by Judge Robert W. Schroeder III. Post-trial motions are expected — Verizon will likely challenge both the infringement finding and the damages amount through motions for judgment as a matter of law (JMOL) and/or for remittitur. An appeal to the U.S. Court of Appeals for the Federal Circuit is likely if post-trial motions do not significantly reduce the award.
Key Takeaways
- $190 million jury verdict for patent infringement in the Eastern District of Texas — one of the largest wireless-technology patent verdicts of 2026.
- VoWi-Fi under scrutiny: The same ‘554 patent is asserted in parallel cases against AT&T and T-Mobile. If those trials produce similar verdicts, total exposure across all three carriers could exceed $500 million.
- The verdict is not final: Verizon is almost certain to file post-trial motions and, if unsuccessful, appeal to the Federal Circuit. The final payout could look very different from the jury’s figure.
- Eastern District of Texas remains a plaintiff-friendly patent venue, with major telecom companies regularly facing large jury awards there.
Why It Matters
VoWi-Fi calling is no longer a niche feature — it is a core piece of how modern smartphones maintain call quality, especially indoors where cellular signals weaken. If U.S. Patent No. 8,009,554 survives post-trial motions and Federal Circuit review as valid and infringed, Aspen Networks could collect hundreds of millions of dollars in royalties from all three major U.S. wireless carriers combined. For Verizon, AT&T, and T-Mobile, the litigation raises the prospect of either paying significant licensing fees or engineering around the ‘554 patent — a costly exercise for technology built deep into network infrastructure and handset software.
The case also illustrates a well-worn patent litigation playbook: file coordinated suits against an entire industry using the same patent, consolidate pre-trial proceedings to develop a unified case theory, then take the strongest case to trial first. A $190 million verdict validates that strategy and will attract attention from patent licensing entities holding wireless-technology patents.
Surfaced via Law360 IP and Bloomberg Law.