Wi-LAN, an Ottawa, Canada company, has initiated litigation against Apple and 21 others companies for patent infringement related to "U.S. patent nos. 5,282,222, RE37,802 and 5,956,323 by making and/or selling various products, including wireless routers, modems and personal notebook computers that use [the technology]. These patents are related to Wi-Fi and to power consumption in DSL products," according to the company on Thursday

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