Yeah. As far back as 1983 even! In Skywalking, Lucas claims he used that title to make the storyline more secretive. And then I think in Annotated Screenplays he says he did it to trick bootleggers but somehow the enormous merchandising empire of Lucasfilm released products with the logo on it for months.
Lucas is a true artist when it comes to making up improbable excuses for things that don't require any.