Opinion ID: 2779923
Heading Depth: 3
Heading Rank: 3

Heading: The Dual Mode Patent

Text: The Dual Mode Patent relates generally to subscriber units that can switch between different types of networks, INTERDIGITAL v. ITC 7 such as CDMA cellular networks and local wireless networks, to transfer data. ’970 patent abstract. According to InterDigital, the patented innovation describes a way for the subscriber unit itself to make the CDMA communication channels available for use rather than waiting for the base station to allocate a channel. For the Dual Mode Patent, InterDigital asserts independent claim 1 and dependent claims 2–9. Claim 1 states in relevant part: 1. A subscriber unit comprising: a cellular transceiver configured to communi- cate with a cellular network via a cellular layered communication protocol; .... wherein the cellular layered communication protocol includes a plurality of layers above a physical layer, and a plurality of physical layer channels are available for assignment for communication with the cellular net- work and a communication session above the physical layer is maintained when all assigned physical layer channels have been released. Id. col. 11 ll. 5–24 (emphasis added).