On December 1, Lexmark became the latest printer vendor to be sued by Cedar Lane Technologies for patent infringement. The non-practicing entity (NPE) or patent troll has also filed patent-infringement lawsuits against Brother, Epson, HP, Konica Minolta, Pantum, Ricoh, and Xerox; however, Ricoh is being sued over cameras, not printers and multifunction printers (MFPs). Background