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Inventor Sinks Sony Appeal

The inconsistent testimony of a California inventor played into a federal judge's decision to reject Sony Corp.'s appeal to overturn a $90.7 million jury verdict in its long running patent dispute with Immersion Corp.

In 2002 Immersion filed suit against Sony alleging the company's PlayStation products use of "haptic feedback" technology infringes Immersion's patent. The technology allows gamers to experience the game's action through synchronized vibrations in the game controllers. In 2004 an Oakland, Calif., jury found in favor of Immersion.

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