IP Law Daily, PATENT—Fed. Cir.: Lyft did not infringe assertion entity’s diagnostic and IT management patents, (Jun 27, 2025)

By Saurabh Kashyap, B.A., M.A., LL.B., LL.M.

Court upheld narrow claim constructions tied to automobile and IT device faults, leading to stipulated non-infringement.

In a non-precedential disposition, the U.S. Court of Appeals for the Federal Circuit affirmed a California district court’s judgment in favor of Lyft, Inc., holding that the ride-hailing company did not infringe U.S. Patent Nos. 6,847,871 (the ’871 patent) and 7,958,215 (the ’215 patent) owned by Quartz Auto Technologies LLC. The Federal Circuit upheld the district court’s construction of critical claim terms “defective operational conditions” in the ’871 patent and “alert” and “the event” in the ’215 patent, as limited to automobile-related faults and IT device problems, respectively. Because the parties had stipulated to non-infringement under these constructions, the court's ruling resolved the case entirely in Lyft's favor (Lyft, Inc. v. Quartz Auto Technologies LLC, No. 24-1089 (Fed. Cir. June 27, 2025)).

Background. The plaintiff/appellee, Lyft, Inc., is a technology company best known for its mobile platform for ridesharing and transportation services. The defendant/appellant, Quartz Auto Technologies LLC, operates as a non-practicing entity that licenses a portfolio of patents related to vehicular and IT system technologies.

The ’871 patent is titled “Continuously Monitoring and Correcting Operational Conditions in Automobiles from a Remote Location Through Wireless Transmissions,” and the ’215 patent is titled “System Management Using Real Time Collaboration.” The ’871 patent covers systems that wirelessly transmit diagnostic data from vehicles to a remote station for real-time detection and correction of automobile defects. The ’215 patent concerns IT management systems that assign responsibility for system alerts based on administrator availability and expertise.

The dispute began when Lyft sought a declaratory judgment of non-infringement with respect to certain claims in both patents following pre-litigation communications from Quartz. Quartz responded by filing counterclaims asserting infringement. The district court held a Markman hearing and subsequently issued a claim construction order on the disputed terms. Following the court's constructions, the parties stipulated that Lyft's accused systems did not infringe under the adopted meanings. The district court then entered final judgment for Lyft, prompting Quartz to appeal.

Claim constructions. The Federal Circuit began its analysis with the term "defective operational conditions in said automobile" from the '871 patent. Quartz argued that the term should be construed broadly to encompass not only automobile-related faults but also issues such as driver attentiveness, passenger behavior, and road conditions. The district court, however, interpreted the term as limited to "defective operational conditions in said automobile of the type typically addressed at a diagnostic and repair center." The Federal Circuit agreed, finding that the specification exclusively discussed mechanical, electrical, and physical automobile faults, particularly those traditionally addressed through diagnostic tools and service facilities.

Citing Phillips v. AWH Corp., 415 F.3d 1303, 1315 (Fed. Cir. 2005) (en banc), the appellate court emphasized that the specification is the “single best guide” to claim meaning. It further referenced Retractable Techs., Inc. v. Becton, Dickinson & Co., 653 F.3d 1296, 1305 (Fed. Cir. 2011), affirming that claim scope must reflect the "actual invention" as disclosed. Rejecting Quartz's reliance on a passage about "diminished traction," the court found that the patent distinguished between internally sensed defects and external conditions and that only automobile-based faults were within the intended scope.

The court next addressed “alert” and “the event” in the ’215 patent. Quartz had proposed a construction that allowed these terms to include any general event or notice, while Lyft maintained that both should be limited to problems with or in a managed IT device. The district court adopted Lyft’s constructions, reasoning that the patent repeatedly described its invention as solving IT-related problems and ensuring prompt administrator response. The Federal Circuit affirmed this reading, relying on Forest Lab’ys, LLC v. Sigmapharm Lab’ys, LLC, 918 F.3d 928, 933 (Fed. Cir. 2019), which held that references to the “present invention” can limit claim scope.

The court also cited Profectus Tech. LLC v. Huawei Techs. Co., 823 F.3d 1375, 1380 (Fed. Cir. 2016), in support of interpreting claims consistently with the specification. It noted that throughout the ’215 patent, the terms “alert” and “event” were used interchangeably with IT device problems and never referenced any other context. Quartz’s reliance on isolated passages that omitted explicit references to IT faults did not overcome the repeated and consistent use of these terms in connection with device errors. As the court emphasized in Virnetx, Inc. v. Cisco Sys., Inc., 767 F.3d 1308, 1318 (Fed. Cir. 2014), such uniform usage “strongly suggests” a narrower scope.

Conclusion. Ultimately, the Federal Circuit concluded that Quartz's broader constructions were inconsistent with the intrinsic record and would divorce the claim language from the inventions actually disclosed. Because the district court's claim constructions were affirmed and the parties had agreed that Lyft did not infringe under those constructions, the appellate court affirmed the judgment of non-infringement. Costs were awarded to Lyft.

The Case is No. 24-1089.

Judge: Chen, R.

Attorneys: Lauren J. Dreyer (Baker Botts LLP) for Lyft, Inc. Michael Rosen (Irell & Manella LLP) for Quartz Auto Technologies LLC.

Companies: Lyft, Inc.; Quartz Auto Technologies LLC

Cases: Patent TechnologyInternet FedCirNews CaliforniaNews