Tesla partly succeeds at CAFC with ruling finding some EV charging claims obvious
Tesla partly succeeds at CAFC with ruling finding some EV charging claims obvious
The court withdrew the finding of non-obviousness for claim 1, relinquished the judgment regarding its dependent claims, and confirmed the finding of non-obviousness for the remaining claims
The U.S. Court of Appeals for the Federal Circuit (CAFC) issued a decision in Tesla, Inc. v. Charge Fusion Technologies, LLC, confirming in part, withdrawing in part, and relinquishing in part a final written decision of the United States Patent and Trademark Office’s Patent Trial and Appeal Board (PTAB). The PTAB incorrectly interpreted a limitation of one independent claim but correctly interpreted limitations of other independent claims. The court withdrew the finding of non-obviousness for claim 1, relinquished the judgment regarding its dependent claims, and confirmed the finding of non-obviousness for the remaining claims. A certain U.S. patent relates to an electric charging system for judiciously charging battery-powered vehicles that charge Fusion Technologies, LLC owns. The patent describes an example in which a user may safely leave a pet in a parked vehicle by determining charging parameters that keep the air conditioning on to maintain a cool vehicle or keep the heat on to maintain a warm vehicle.
Tesla petitioned for inter partes review (IPR) of several claims of this patent, arguing that the claims would have been obvious in light of a Japanese patent application known as Hibi. The PTAB issued a final written decision finding that Tesla failed to prove that the challenged claims were invalid as obvious, and Tesla appealed. Judge Reyna, writing for the CAFC, addressed the climate control limitation’s construction in claim 1. As per the PTAB, the claim needs the instructions to take the battery level into account in some manner when operating the climate control mechanism. The plain language does not require that the climate control mechanism itself actually takes the battery charge level into account, Tesla argued. The Federal Circuit agreed with Tesla, reportedly finding that “the claims merely require that the climate control mechanism continue until the battery charge reaches a predetermined level”. The specification does not indicate that the instructions take into consideration the battery level in some manner while operating the climate control mechanism; the court noted. As a result, the Federal Circuit relinquished that portion of the PTAB’s construction. As claim 1 would have been obvious, the court withdrew the PTAB’s decision on patentability for that claim. The court also relinquished the determination as to certain dependent claims and committed for further proceedings.
