Remember how Kodak filed suit against Apple and RIM a year ago alleging patent infringement? Well, late yesterday, a U.S. International Trade Commission judge ruled that Kodak’s case — which related to low resolution previews of videos that are displayed on-screen while recording full resolution video — is invalid. Kodak had previously won claims against LG and Samsung, after which it was able to put a licensing deal in place worth a reported $864 million. Things might not turn out that well this time around, however. RIM has filed a federal suit challenging other Kodak patents and Apple is suing Kodak for patent infringement of its patents.