SOURCE: TeleCommunication Systems, Inc.

December 20, 2007 13:15 ET

TCS Files Patent Infringement Lawsuit

TCS Patent Enables Multiple Wireless Email Accounts

ANNAPOLIS, MD--(Marketwire - December 20, 2007) - TeleCommunication Systems, Inc. (TCS) (NASDAQ: TSYS), a leading provider of mission-critical wireless communications, today announced it has filed a lawsuit in the U.S. District Court for the Eastern District of Virginia against Research In Motion Limited (RIM) for patent infringement. TCS seeks damages for patent infringement as well as an injunction against RIM from further infringement.

The lawsuit asserts infringement of United States Patent No. 6,871,215. TCS asserts infringement by RIM's products and services that allow a wireless user to access and manage multiple email accounts. The company initiated litigation to protect its rights only after business discussions with RIM failed to resolve the dispute. TCS has retained the law firm of Niro, Scavone, Haller & Niro, a Chicago-based law firm that specializes in intellectual property trials, to litigate the case.

There can be no assurances that this lawsuit will have a successful outcome, and the company could become subject to counterclaims by RIM.

The case is TeleCommunication Systems, Inc. v. Research In Motion Limited, Case No. 1:07cv1277(E.D. Va.).

About TeleCommunication Systems, Inc.

TeleCommunication Systems, Inc. (TCS) (NASDAQ: TSYS) produces wireless data communications technology solutions that require proven high levels of reliability. TCS provides wireless and VoIP E9-1-1 network-based services, secure deployable communication systems and engineered satellite-based services, and commercial location applications, like traffic and navigation, using the precise location of a wireless device. Customers include leading wireless and VoIP carriers around the world, and agencies of the U.S. Departments of Defense, State, and Homeland Security. For more information, visit www.telecomsys.com.

Except for the historical information contained herein, this news release contains forward-looking statements as defined within Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities and Exchange Act of 1934, as amended. These statements are subject to risks and uncertainties and are based upon TCS' current expectations and assumptions that if incorrect would cause actual results to differ materially from those anticipated. Risks include the possibility of counterclaims and related unfavorable court decisions, the possibility that the costs of litigation will exceed resulting recoveries (if any), and those risks detailed from time to time in the Company's SEC reports, including the report on Form 10-K for the year ended December 31, 2006 and Form 10-Q for the quarter ended September 30, 2007.

Existing and prospective investors are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. The Company undertakes no obligation to update or revise the information in this press release, whether as a result of new information, future events or circumstances, or otherwise.

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