Calypso sues T-Mobile USA over [email protected] service

FMC company Calypso Wireless has filed a patent infringement lawsuit against T-Mobile USA, charging that the operator violates its patent pertaining to how T-Mobile switches callers between GSM and WiFi connections.

T-Mobile's [email protected] service has been in operation since June 2007, and has been steadily increasing the number of devices that can take advantage of the service. T-Mobile said in a statement that "based on its preliminary review the company believes that Calypso Wireless's allegations are without merit." T-Mobile said it intends to defend itself vigorously in this case."

For more:
- read FierceWireless
- check out this release

Related Article:
T-Mobile adds to its [email protected] lineup