UNITED STATES—   Fujifilm has launched a legal action against Kodak, and claims that its Sonora processless plates infringe Fujifilm’s patents. The patent infringement lawsuit was lodged against Kodak in the U.S.. Fujifilm claims four of its patents, which involve processless lithographic plate technologies, including method and apparatus claims. Fujifilm is demanding  damages and injunctive relief related to Kodak’s “unauthorized commercial manufacture, use, offer to sell, or sale within the United States, and/or importation of its processless lithographic printing plate products that infringe the four asserted patents” . Kodak has said  “Kodak believes the claims are without merit and we plan to defend the claims vigorously.” The three major world offset plate manufactures are Kodak, Fujifilm and Agfa (now EC03).In North America Kodak is considered to be the largest.It has been so competitive that Agfa sold their plate division last year .