IBM sues Priceline over patent dispute

IBM has sued Priceline Group and its subsidiaries over royalties for patents issued more than a decade ago. Norwalk, Conn.-based Priceline (NASDAQ: PCLN) and its properties Kayak and OpenTable were named in the suit and accused of failing to pay royalties on patents stemming from the Prodigy online service, Bloomberg reported. IBM (NYSE: IBM) said it informed Priceline in 2011 of its belief that the online-reservations company was infringing on patents, but hasn't negotiated a license since, the…