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."
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T-Mobile adds to its [email protected] lineup