Two judges with the U.S. Court of Appeals for the Federal Circuit sided with the Patent Trial and Appeal Board (PTAB) in a patent dispute between Oticon Medical and Cochlear, but the third judge, Pauline Newman took issue with the decision. Newman said the majority applied “an improper analytical technique” to determine that the preamble to a patent does not limit the related claims, despite that prior art cited to dispute the patent had been “disavowed by the preamble.”