Law360, New York (June 03, 2009) -- T-Mobile USA Inc. and other cellular carriers targeted in Tendler Cellular of Texas LLC’s infringement suit have fired back that the patent-at-issue, which covers a system that locates a wireless caller for 911 services, is unenforceable due to inequitable conduct.
T-Mobile, Sprint Spectrum LP and Nextel Operations Inc. lodged counterclaims on Monday in the U.S. District Court for the Eastern District of Texas, accusing Tendler of intentionally deceiving the U.S....
