RIM Subsidiary Files Formal Take-Over Bid for Certicom

Waterloo, ON – Research In Motion Limited (“RIM”) (Nasdaq: RIMM; TSX: RIM) announced today that a wholly-owned subsidiary of RIM has formally commenced its take-over bid (the "Offer") for all of the outstanding common shares of Certicom Corp. (TSX: CIC) for CAD $1.50 in cash per share, subject to certain terms and conditions. The Offer will be open for acceptance until 5:00 p.m. (Toronto time) on January 15, 2009 unless withdrawn or extended by RIM’s subsidiary.

The CAD $1.50 in cash per common share represents a premium of approximately 76.5% over the closing price of Certicom shares on December 2, 2008, being the last day prior to RIM's public notice of its intention to make the Offer and a premium of approximately 76.1% over the volume weighted average price of the Certicom shares for the 20 trading days prior to December 3, 2008.

The formal announcements of the Offer appeared today in The Globe and Mail and in Le Devoir. RIM’s subsidiary has filed the take-over bid circular and related documents, in both English and French, with the Canadian securities regulatory authorities. These documents will be available at www.sedar.com. A take-over bid circular will be mailed to shareholders upon receipt of a shareholder list from Certicom.

The Offer is subject to customary conditions including that at least 66 ⅔% of the Certicom shares (on a fully-diluted basis) are validly deposited and not validly withdrawn on the expiry date of the Offer.

Certicom shareholders are urged to read the take-over bid circular and related documents. Questions regarding the Offer and assistance in depositing Certicom shares under the Offer should be directed to Kingsdale Shareholder Services Inc., the Information Agent for the Offer, at 1-800-775-4067.

Copies of the take-over bid circular and related documents may be obtained without charge from CIBC Mellon Trust Company, the Depositary for the Offer, at 1-800-387-0825.

About Research In Motion (RIM)
Research In Motion is a leading designer, manufacturer and marketer of innovative wireless solutions for the worldwide mobile communications market. Through the development of integrated hardware, software and services that support multiple wireless network standards, RIM provides platforms and solutions for seamless access to time-sensitive information including email, phone, SMS messaging, Internet and intranet-based applications. RIM's portfolio of award-winning products, services and embedded technologies are used by thousands of organizations around the world and include the BlackBerry® wireless platform, the RIM Wireless Handheld™ product line, software development tools, radio-modems and software/hardware licensing agreements. Founded in 1984 and based in Waterloo, Ontario, RIM operates offices in North America, Europe and Asia Pacific. RIM is listed on the Nasdaq Stock Market (Nasdaq: RIMM) and the Toronto Stock Exchange (TSX: RIM). For more information, visit www.rim.com or www.BlackBerry.com.