Jupiter Media Metrix sues rivals

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New York--After settling a patent infringement suit Wednesday against PC Data Inc., Jupiter Media Metrix Inc. is going after its other competitors in the online measurement industry. On Wednesday, it filed two lawsuits in the U.S. District Court of Delaware against rivals NetRatings Inc., Milpitas, Calif., and NetValue, New York, claiming their online tracking systems infringe on patents held by Jupiter Media Metrix.
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