A split panel decision from the U.S. Court of Appeals for the Federal Circuit on Wednesday upheld a Patent Trial and Appeal Board (PTAB) ruling, siding with Charge Fusion Technologies, LLC in its patent dispute with Tesla Inc. The ruling affirms the validity of Charge Fusion’s electric vehicle (EV) charging patent, U.S. Patent No. 10,998,753, titled “Systems and Methods for Charging Electric Vehicles.”
Tesla had challenged the patent through an inter partes review (IPR) filed in October 2024, arguing the claims lacked novelty and were obvious in light of prior art. The PTAB instituted the review but ultimately determined Tesla had not demonstrated the patent claims were unpatentable. Tesla appealed that decision to the Federal Circuit.
The core of the dispute centered on the interpretation of the “Charging Control Limitation” within the patent. Tesla contended that a prior art reference, U.S. Patent Application Publication No. 2008/0243331 (referred to as “Kato”), demonstrated the charging control mechanism was already known. Specifically, Tesla argued that Kato disclosed a system where a user manually plugging in a vehicle at scheduled charging locations constituted sufficient control.
However, both the PTAB and the Federal Circuit majority agreed that the “plain and ordinary meaning” of the Charging Control Limitation excludes manual user intervention. The court found the patent’s claims require an automated system, not one reliant on a user initiating and terminating charging sessions. The court’s opinion stated the patent specification “discloses embodiments where the charging system itself ‘intelligently’ charges vehicles by conducting the charging process in accordance with a charging schedule.”
Judge Chen authored the majority opinion, joined by Judge Reyna. The court emphasized that the patent’s specification further supports an automated process, referencing interactions with wireless charging locations and “intelligent charging management” that goes beyond simple manual plug-in operation.
Judge Dyk dissented, arguing that Kato did disclose the Charging Control limitation under a reasonable construction, and that the claim language did not explicitly require “intelligent charging.”
The decision comes as patent litigation in the EV sector intensifies, with companies increasingly relying on intellectual property protection to secure their positions in the rapidly evolving market. According to legal news sources, this ruling could set a precedent for future disputes and encourage greater investment in patent portfolios within the EV technology space. The case highlights the complexities of navigating patent challenges in the high-tech industry, where nuanced interpretations of claim language and prior art can have significant consequences.
The Federal Circuit’s affirmation of the PTAB’s decision means Charge Fusion Technologies’ patent remains in force, potentially impacting Tesla and other companies involved in EV charging technology. No further appeals are currently scheduled, leaving the patent’s validity unchallenged.