FOR IMMEDIATE RELEASE
June 12, 2008

Tellabs sues Fujitsu for patent infringement
Lawsuit asserts Fujitsu optical products infringe Tellabs intellectual property

Tellabs filed a patent infringement lawsuit against Fujitsu Limited and Fujitsu Network Communications, Inc., in the U.S. District Court for the Northern District of Illinois. Tellabs seeks both monetary damages as well as an injunction against Fujitsu to prevent Fujitsu's future infringement of Tellabs' intellectual property.

In its complaint, filed on June 11, 2008, Tellabs asserts that Fujitsu infringes Tellabs' U.S. Patent No. 7,369,772. The United States Patent Office recently granted the patent to Tellabs. Various Fujitsu products are subject to the lawsuit, including reconfigurable optical add/drop multiplexing (ROADM) systems and components that Fujitsu markets within its FLASHWAVE product line.

"Tellabs invests hundreds of millions of dollars in research and development each year, in order to create innovative products and services that help our customers succeed," said Dan Kelly, executive vice president, global products. "Tellabs inventors have earned hundreds of valuable patents, and we must protect our intellectual property from poaching."

About Tellabs — Tellabs advances telecommunications networks to meet the evolving needs of users. Solutions from Tellabs enable service providers to deliver high-quality voice, video and data services over wireline and wireless networks around the world. Tellabs (NASDAQ: TLAB) is part of the NASDAQ-100 Index, NASDAQ Global Select Market, Ocean Tomo 300™ Patent Index and the S&P 500. www.tellabs.com

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