The U.S. Patent and Trademark Office (USPTO) Patent Trial and Appeal Board (PTAB) designated a January 2020 decision, Lectrosonics, Inc. v. Zaxcom, as precedential on April 14. Lectrosonics filed a petition requesting an inter partes review (IPR) of claims 7, 8, 11, 12, 14, and 15 of U.S. Patent No. 7,929,902 (the ‘902 patent), which was directed to a system and method “for recording and processing audio having one or more tracks received from one or more wireless devices operating in either an asynchronous or synchronous mode.” In the Final Written Decision, the PTAB determined that Lectrosonics met its burden of showing, by a preponderance of the evidence, that claims 7, 8, 11, 12, 14, and 15 of the ’902 patent were unpatentable, but that it had not met its burden of showing, by a preponderance of the evidence, that proposed substitute claims 21–26 were unpatentable.
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