Three major electronics makers have been accused of violating patented work from the University of Washington with their use of the Bluetooth wireless technology found in millions of computers, cell phones, and headsets.

Japan's Matsushita Electric Industrial Co., South Korea's Samsung Electronics Co., and Finland's Nokia Corp. were accused of illegally incorporating unlicensed Bluetooth chip sets in a variety of products. The federal lawsuit seeks unspecified damages and an injunction barring the companies from selling those products.

Matsushita, known globally for its Panasonic brand products, and Samsung produce a wide


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