EFI and its superwide format printer unit VUTEk recently obtained a sweeping victory in its defense of a patent lawsuit filed by Leggett & Platt, Inc.      The Federal Court of Appeals in Washington, D.C., ruled decisively and recently concluded that all the asserted claims of Leggett & Platt’s (L&P) patent (U.S. Patent No. 6,755,518) were invalid on multiple grounds.      Leggett & Platt brought the lawsuit during EFI’s acquisition of VUTEk in May 2005 in its home court of t...