Law360, New York (June 02, 2009, 12:00 AM ET) -- 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. Patent and Trademark Office for failing to disclose key information related to patentability during prosecution of...
Cellular Cos. Accuse Tendler Of Inequitable Conduct
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