Last week, Gemstar International Group announced that its subsidiary, StarSight Telecast, had filed a patent-infringement suit against TiVo in Federal District Court, Northern District of California. According to Gemstar, the suit claims "that TiVo willfully infringed certain Gemstar intellectual property by virtue of TiVo's deployment, marketing, offers to sell, and sale of personalized video recorder devices containing an unlicensed interactive program guide." Gemstar, which markets VCR Plus+, says it is seeking an injunction and monetary damages.