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Research In Motion Files Wireless Patent Complaint Against Glenayre Electronics, Inc.

Waterloo, ON: Research In Motion Limited (RIM) (Nasdaq: RIMM; TSE: RIM), a pioneer and world leader in the mobile communications market, today announced that it has filed a complaint for patent and trademark infringement against Glenayre Electronics, Inc. (Nasdaq: GEMS), a provider of personal telecommunication systems. The complaint was filed May 16, 2001 in the United States District Court for the District of Delaware.

The complaint alleges that Glenayre has engaged in acts of patent infringement, trademark infringement, dilution, unfair competition and false advertising in connection with the development, marketing and sale of wireless handheld products.

The complaint alleges that Glenayre's conduct violates federal patent law 35 U.S.C. 271, by infringing RIM's recently issued United States Patent No. 6,219,694. The patent relates to RIM's BlackBerry Single Mailbox Integration patent which covers a system and method invented by RIM that was commercialized as an important architectural element of RIM's award-winning BlackBerry wireless email solution. This action also alleges that Glenayre violates the Lanham Act (15 U.S.C. 1114 and 1125(a)) and the Delaware Deceptive Trade Practices Act (6 Del. C. 2531 et. seq.) for deceptive trade practices and unfair competition based upon Glenayre's unauthorized and willful use of designations and names confusingly similar to registered trademarks belonging to RIM.

In its complaint, RIM seeks Glenayre to be found to have infringed on RIM's patent rights and that such conduct entitles RIM to preliminary and permanent injunctions barring Glenayre from continuing to infringe on RIM's patents. In addition RIM seeks to prevent Glenayre from using product designations that infringe on RIM's registered trademarks and also seeks injunctive relief, profits, damages, costs and legal fees for Glenayre's allegedly willful conduct.

About Research In Motion

Research In Motion® Limited is a leading designer, manufacturer and marketer of innovative wireless solutions for the mobile communications market. Through development and integration of hardware, software and services, RIM® provides solutions for seamless access to time-sensitive information including email, messaging, Internet and intranet-based applications. RIM technology also enables a broad array of third party developers and manufacturers around the world to enhance their products and services with wireless connectivity. RIM's portfolio of award-winning products includes the RIM Wireless Handheld™ product line, the BlackBerry™ wireless email solution, embedded radio-modems and software development tools. Founded in 1984 and based in Waterloo, Ontario RIM operates offices in Canada, the United States and England. RIM is listed on the Nasdaq Stock Market (Nasdaq: RIMM) and the Toronto Stock Exchange (TSE: RIM). For more information, visit www.rim.net. Investors may contact investor_relations@rim.net. Customers may contact info@rim.net.

Research In Motion, RIM and BlackBerry are trademarks of Research In Motion Limited. Research In Motion and RIM are registered with the U.S. Patent and Trademark Office and may be pending or registered in other countries. All other brands, products and company names mentioned herein may be trademarks or registered trademarks of their respective holders.

Forward-looking statements in this news release are made pursuant to the "safe harbor" provisions of the United States Private Securities Litigation Reform Act of 1995. Investors are cautioned that such forward-looking statements involve risks and uncertainties, including, without limitation, risks relating to possible product defects and product liability, risks related to international sales and potential foreign currency exchange fluctuations, risks related to the year 2000 issue, continued acceptance of RIM's products, increased levels of competition, technological changes, dependence on intellectual property rights and other risks detailed from time to time in RIM's periodic reports filed with the United States Securities and Exchange Commission and other regulatory authorities.