News Release Details

Wi-LAN ESCALATES PATENT ENFORCEMENT PROGRAM

06/23/2004

Legal Action Commenced in Canada Against Cisco Systems Inc.

CALGARY, Canada - June 23, 2004 - Wi-LAN Inc. (TSX:WIN), a global provider of broadband wireless communications products and technologies, today announced the beginning of a new phase in its intellectual property licensing strategy. Following the successful settlement of the Redline Communications lawsuit, the wide market acceptance of Wi-LAN's W-OFDM technology, and Wi-LAN's recent purchase of 17 patents and patent applications that relate to the implementation of Wi-MAX Certified(1) products, Wi-LAN is escalating its active pursuit of licensing and protecting its intellectual property. In that regard, Wi-LAN has commenced legal action in Canada against Cisco Systems Inc., a manufacturer and marketer of networking and communications products, for producing and marketing IEEE standard 802.11a and 802.11g devices without a license from Wi-LAN. Wi-LAN is seeking compensation for use of its intellectual property as well as punitive damages.

Cisco's Linksys Division and Aironet product line utilize advanced orthogonal frequency division multiplexing (OFDM) technology and it is Wi-LAN's belief that these devices infringe on Wi-LAN's Canadian patent number 2,064,975 and Wi-LAN's United States patents No. 5,282,222 and 5,555,268. Wi-LAN currently has intellectual property licensing agreements with Philips Semiconductor, Fujitsu Microelectronics of America and Redline Communications.

"This legal action against Cisco puts the industry on notice that Wi-LAN will aggressively protect its patent rights," stated Sayed-Amr (Sisso) El Hamamsy, President & CEO of Wi-LAN. "Wi-LAN has consistently maintained that its patents are necessary for the implementation of the 2nd Generation WiFi Alliance(1) standards, IEEE 802.11a and 802.11g(1), and the WiMAX Forum(1) standards, IEEE 802.16(1) and the ETSI BRAN HiperMAN(1). It is our intent to collect, either directly or through component manufacturers, royalties from any company selling 802.11a, 802.11g or WiMAX Certified(1) equipment."

Wi-LAN will continue to vigorously pursue its legal remedies when it believes that its intellectual property has been infringed upon.

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About Wi-LAN Inc.

Wi-LAN is a global provider of broadband wireless communications products and technologies, offering businesses, including telecom service providers, and government enterprises effective, economic and secure wireless high-speed communications solutions. Wi-LAN specializes in high-speed Internet access, data network extension, and wireless data and telephony backhaul, utilizing its high quality products and industry-leading technologies. Wi-LAN believes its W-OFDM patents are necessary for the implementation of devices using the IEEE 802.16 WirelessMAN Standard * and the ETSI BRAN HiperMAN* standard (the WiMAX* standards), the IEEE standards 802.11a and 802.11g (the 2nd generation Wi-Fi* standards), and the ETSI BRAN HiperLAN/2* standard. Wi-LAN licenses its W-OFDM technology and has executed non-exclusive W-OFDM license agreements with semiconductor companies. Wi-LAN is the Chair Company of the OFDM Forum (www.ofdm-forum.com) and an active member of the WiMAX* Forum (www.wimaxforum.org). Wi-LAN's common shares trade on The Toronto Stock Exchange under the symbol "WIN." Detailed information on Wi-LAN can be found at www.wi-lan.com.

Forward Looking Information

Certain statements in this release, other than statements of historical fact, may include forward-looking information that involves various risks and uncertainties. These may include, without limitation, statements based on current expectations involving a number of risks and uncertainties related to all aspects of the wireless communications industry. These risks and uncertainties include, but are not restricted to, continued increased demand for the Company's products, the Company's ability to maintain its technological leadership in the field of high-speed wireless communications, the Company's ability to attract and retain key employees, the enforceability of the Company's patents, and the availability of key components.

These uncertainties may cause actual results to differ from information contained herein. There can be no assurance that such statements will prove to be accurate. Actual results and future events could differ materially from those anticipated in such statements. These and all subsequent written and oral forward-looking statements are based on the estimates and opinions of management on the dates they are made and expressly qualified in their entirety by this notice. The Company assumes no obligation to update forward-looking statements should circumstances or management's estimates or opinions change.

* All trademarks and brands mentioned in this release are the property of their respective owners.

For more information please contact:

Wi-LAN Inc.
Corporate Communications and Investor Relations
Ken Wetherell
Ph: (403) 207-6329
E-mail: kwetherell@wi-lan.com


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