JANUARY 29, 2008 -- Fujitsu Ltd and Fujitsu Network Communications Inc. (search for Fujitsu) today announced that they have filed a patent infringement lawsuit this morning against Tellabs Inc. and Tellabs Operations Inc. (search for Tellabs) in the United States District Court for the Eastern District of Texas. Fujitsu says it seeks monetary damages and an injunction against Tellabs' future infringement of Fujitsu's patents.
In its complaint, Fujitsu asserts that Tellabs' products infringe four of Fujitsu's U.S. patents covering optical communication technologies. The accused products include the Tellabs 7100 Optical Transport System, Tellabs 5500 series, and Tellabs 6300 series. Fujitsu representatives say the complaint follows numerous attempts by Fujitsu to engage in cooperative discussions with Tellabs in order to resolve Tellabs' infringement activities. Since a cooperative resolution could not be reached, Fujitsu says it determined that litigation was necessary in order to protect its rights and the value of its intellectual property.
"Fujitsu has been investing heavily for years in research and development and owns approximately 10,000 patents in the field of optical communications around the world," reports Masanobu Katoh, corporate vice president and president of the Law & Intellectual Property Unit of Fujitsu Ltd. "In this field, Fujitsu is a leader and has patents that are important to optical communication technologies such as Synchronous Optical Networking [SONET], Synchronous Digital Hierarchy [SDH], and Dense Wavelength Division Multiplexing [DWDM]. We consider our intellectual property to be valuable company assets and are committed to protecting and enforcing them," he asserts.