The US Court of Appeals for the Federal Circuit affirmed a
Patent Trial and Appeal Board (PTAB) decision, finding that the
PTAB did not need to explicitly construe a claim term. HTC
Corp. v. Cellular Communications Equipment, LLC, Case No.
16-1880 (Fed. Cir., Dec. 18, 2017) (Reyna, J).
Cellular Communications owns a patent directed to a
communications system where the mobile device is assigned a
plurality of codes for transmitting messages. When transmission
conditions deteriorate, such as when there is a high amount of
interference, the base station may command the mobile device to
increase transmit power in order to send the message. To avoid
operating at maximum transmission power, the patent's claimed
solution sets a "transmit power difference" for the
plurality of codes in the mobile device at the start of a message
transmission. Setting this transmit power difference allows the
mobile device to increase transmit power to overcome interference
and avoid aborting
