Cognitive Radio is an emerging technology for intelligent wireless communications. Cognitive Radio is able to dynamically adapt to radio environment to maximize the flexible utilization of the limited spectrum resources.To find the key IPR holders for the Cognitive Radio, a keyword search of the global patent data bases (USPTO, EPO, JPO, and WIPO (PCT)) has been performed. As of March 31 2010, the key IPR holders and their IPR share for the Cognitive Radio (total of 360 published and issued patent applications) are as follows:
Motorola (49, 14%), Samsung (49, 14%), Qualcomm (28, 8%), Nokia (27, 8%), Philips (19, 5%), ETRI (15, 4%), Toshiba (14, 4%), MS (13, 4%), HONG KONG UST (12, 3%), and STMicroelectronics (11, 3%).
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