Some challenged claims of Empire Technology Development LLC’s patent that relates to methods and systems for selecting a transmit mode in a communications system are unpatentable as obvious over prior art, the Patent Trial and Appeal Board said, in an inter partes review by Samsung Electronics Co. Ltd. and Samsung Electronics America Inc. According to the board, some challenged claims are obvious over various combinations of prior art, including prior art that relates to techniques for improving control and management of wireless communication devices with multiple antennas, to a power-controlled channel access protocol for MIMO-capable wireless local area networks with ...
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