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TransData Inc., a manufacturer of solid-state power and energy metering products, reports that an Oklahoma federal judge has issued a ruling favorable to the company in its ongoing patent infringement litigation against a group of U.S. electric utilities over wireless smart meter technology.

TransData says the order construes the disputed claim terms of its U.S. patents in a manner consistent with the constructions it has offered. In particular, the court rejected all of the defendants' proposed constructions and also rejected the defendants' argument that TransData's patents were invalid as indefinite under 35 U.S.C. 112.

In the litigation, TransData has asserted its patents against CenterPoint Energy Houston Electric LLC; Oncor Electric Delivery Co. LLC; Texas-New Mexico Power Co.; Denton Municipal Utilities; San Diego Gas & Electric Co.; Denton County Electric Cooperative Inc.; Alabama Power Co., Georgia Power Co. and Mississippi Power Co., subsidiaries of Southern Co.; Oklahoma Gas & Electric Co.; Tri-County Electric Cooperative Inc.; and Wisconsin Power & Light Co.

TransData alleges that the defendants are making, using, offering to sell, selling and/or importing certain digital electric meters equipped with an internal wireless communication circuit and antenna that infringe its patents.

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