Case: Patents/Obviousness (P.T.A.B.)

Challenged claims of Nippon Telegraph and Telephone Corporation’s patent for a wireless packet communication method and apparatus for transmitting a plurality of wireless packets simultaneously, by using carrier sense to determine whether one of multiple wireless channels is idle, aren’t unpatentable as obvious over prior art, according to the Patent Trial and Appeal Board, in an inter partes review by Mediatek Inc. and Mediatek USA Inc. The board said that the claims aren’t obvious over prior art, including prior art that discloses arranging a plurality of access points in a wireless local area network to communicate on a common frequency ...