IBM Files Patent Suit Against Priceline, Kayak, OpenTable

IBM is suing Priceline Group Inc. and its subsidiaries, travel website Kayak and restaurant-reservation tool Opentable, after failing to reach a patent-licensing agreement. International Business Machines Corp. said the Priceline companies aren’t paying royalties to use two patents issued in the late 1990s that were the result of development of the Prodigy online service, one of the earliest means for the public to access the Internet.