Federal Express v. Qualcomm — Federal Circuit Vacates PTAB Finding on Package Sensor Network Patent, Remands for Overlooked Power Management Argument

Background

FedEx owns U.S. Patent No. 9,182,231, which covers a hierarchical sensor network for tracking packages throughout the shipping process. The system works by placing small “ID nodes” on individual packages that communicate via short-range wireless with a “mobile master node” in one of the packages. The master node then relays information to a central server over a longer-range connection. This hierarchical approach means individual package sensors do not need expensive long-range communication capability.

Qualcomm petitioned for inter partes review (IPR), arguing that FedEx’s patent claims were obvious in light of two prior art references: U.S. Patent No. 7,212,829 (“Lau”) and U.S. Patent Application No. 2007/0002139 (“Benson”). Benson describes a similar system for monitoring remote objects using master data collection units and remote sensors. The Patent Trial and Appeal Board (PTAB) found all challenged claims—1-15 and 26-30—unpatentable as obvious. FedEx appealed as to claims 9, 23-26.

The Court’s Holding

The Federal Circuit affirmed in part and vacated in part, with a partial dissent from Judge Cunningham.

Claim construction—”short range” (affirmed): The most significant issue was whether “short range communication path” in claim 26 has a fixed meaning or is a relative term. FedEx argued that the patent distinguishes between “short,” “medium,” and “long” range paths as rigid categories, meaning a WLAN (WiFi) path could never qualify as “short range.” The court disagreed. Because the claim uses the comparative “longer range” rather than simply “long range,” the court held that “short” and “longer” are defined relative to each other. The specification supports this reading: it interchangeably uses “short” and “shorter,” collapses “medium” and “long” into “medium/long,” and repeatedly describes the paths in comparative terms. A WLAN path can qualify as “short range” so long as the other path is longer.

Claim construction—”unable to” (affirmed): Claim 26 requires that ID nodes be “unable to directly communicate with the server.” FedEx argued this means the device must physically lack the capability to communicate with the server. The Board rejected this construction, and the Federal Circuit agreed, finding that the term is satisfied even if the device merely does not communicate directly in the claimed embodiment.

Claims 9 and 23-25—power management (vacated and remanded): These claims require “a power management instruction causing the mobile master node to alter at least one operation of the mobile master node and the ID node to change power consumption.” FedEx argued that a single instruction must affect both the master node and the ID node. The Board found the prior art satisfied these limitations but never addressed FedEx’s specific argument about whether a single instruction must alter both devices. The Federal Circuit held this was error under the Administrative Procedure Act, which requires the Board to address all arguments raised before it, and remanded for further proceedings.

Key Takeaways

• Relative claim terms like “short range” and “longer range” will be construed in relation to each other rather than as fixed categories, particularly when the specification uses the terms interchangeably and in comparative constructions.
• The PTAB must address all arguments raised by patent owners in IPR proceedings—failure to do so violates the APA and will result in vacatur and remand.
• A companion case (No. 2024-1236), decided the same day, rejected FedEx’s challenge that Qualcomm should have named Roambee Corporation as a real party in interest in its IPR petition.

Why It Matters

This decision matters for two reasons. First, the claim construction ruling on “short range” provides important guidance for IoT and sensor network patents: patent drafters should be precise about whether communication range terms are meant as absolute categories or relative descriptors, because the Federal Circuit will default to a relative reading when the intrinsic record is ambiguous. Second, the remand on the power management claims reinforces that the PTAB cannot shortcut its obligation to engage with every argument a patent owner raises. For patent owners defending their patents in IPR, the decision confirms that the APA remains a meaningful check on Board proceedings, even in technical disputes over prior art.