Calypso Wireless sues T-Mobile USA for patent Infringement

^{Automatic Switching of Network Access Points} Calypso Wireless sues T-Mobile USA for patent Infringement

16 Nov 2008 at 12:58 GMT Timo Poropudas

Houston, Texas-based Calypso Wireless, Inc. , a Fixed Mobile Convergence (“FMC”) technology company, Friday announced that it has filed a patent infringement complaint against T-Mobile USA, Inc. in the Eastern District Court of Texas.

Calypso says it owns a patent on Automatic Switching of Network Access Points, technology, which helps carriers achieve more efficient allocation of resources by freeing more wide area cellular spectrum space for voice, video and data, and increasing overall bandwidth available to other users. The technology allows a user to seamlessly switch and connect from either a Cellular Network or a Wireless Local Area Network Access Point (WLAN), seamlessly without the user noticing the change.

In the lawsuit, Calypso seeks to obtain past and future damages, attorney’s fees, and an injunction prohibiting T-Mobile from continuing to sell or make use of the Calypso invention. The case relates primarily to T-Mobile’s Hotspot@Home product, which allows subscribers to seamlessly switch from the GSM network to local WiFi hotspots.