“Since the dawn of the film industry, it has been common practice for writers to send scripts and pitch stories to movie executives and producers. And for almost as long, scores of writers have sued the studios for stealing their ideas, only to have suits, filed on hard-to-prove copyright infringement grounds, which are dismissed or quietly settled. But a recently published opinion from the United States Court of Appeals for the Ninth Circuit, in Jeff Grosso v. Miramax Film Corporation, may soon shift the balance of power in this age-old tug of war.”