EFI and its superwide format printer unit VUTEk achieved a victory in a patent lawsuit against Leggett & Platt Inc. A federal judge in St. Louis, Mo., held that all of the claims in L&P’s U.S. Patent No. 7,290,874 were invalid in light of EFI’s own patent and printer design technology.
The court concluded that EFI’s UV curing methods were invented and patented before any of L&P’s patents. As a result, the court invalidated L&P’s patent. The court’s decision is the third in a series of victories vindicating EFI’s innovative UV-curing technology. The court previously invalidated L&P’s U.S. Patent No. 6,755,518 on the grounds that EFI invented the technology first, and the U.S. Court of Appeals for the Federal Circuit affirmed that decision.