Federal Signal Added To Messaging Patent Suit

Law360, New York (January 11, 2010, 12:55 PM EST) -- Mass notification systems provider Cooper Notification Inc. has added another company to a complaint that accuses Twitter Inc. and others of infringing its methods for sending messages to several places at once.

Cooper has tacked safety and security systems manufacturer Federal Signal Corp. to the list of defendants, according to an amended complaint filed Friday in the U.S. District Court for the District of Delaware.

In a case first filed in November, Cooper claims that Twitter, Everbridge Inc., Rave Wireless Inc. and now Federal Signal have...
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