Luxo AS, a Norwegian light manufacturer and distributor, has sued Disney and Pixar et. al. asserting various trademark-related claims arising from Disney’s and Pixar’s use of the LUXO trademark.  In an always interesting case of trademark law/branding meets fair use, Luxo has alleged that Disney/Pixar’s use of "Luxo Jr." to identify the "hopping lamp," which has been the corporate mascot…