A selected summary of Southern California-related business litigation developments during the past week.

Songwriter Sues Over Disney Film: Victor Cesario sued Alan Silvestri and producers of the film “Who Framed Roger Rabbit? ,” alleging that Silvestri used Cesario’s music in the film. The U.S. District Court lawsuit alleges that Cesario had Silvestri arrange a 1974 composition he wrote, “Let’s Start Out, Where It Ended.” The suit says Cesario later discovered that Silvestri copied his composition to produce “End Title” and soundtrack music on the 1988 animated film produced by Amblin’ Entertainment, Silver Screen Partners III and Touchstone Pictures, a subsidiary of Walt Disney Co. The suit alleges infringement of Cesario’s Jan. 7, 1991, copyright of the music. (Case No. 91-0897. Filed Feb. 19)