The PTAB concluded that the term “RF channel” as used in the ‘679 patent “does not include code channels – for example data streams created by CDMA– but instead refers only to frequency bands, such as those created by FDMA.” (Final Written Decision of IPR2016-01898, p. 13.) All six of the IPR petitions of the ‘679 and ‘565 patents were denied based on the claim construction issue and because Cisco’s grounds were based CDMA prior art.
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