George Lucas' production company has filed a federal lawsuit against the makers of a pornographic movie, alleging that it's too similar to the 1977 epic Star Wars.

Lucasfilm Ltd. has sued Media Market Group Ltd., the New York producers of Star Ballz, for copyright and trademark infringement, saying consumers could be confused into thinking that Lucasfilm sponsored or produced the X-rated movie that makes a naked mockery of the Star Wars story line.

This confusion could result in a loss of sales for Lucasfilm, according to the lawsuit, filed last Friday. The lawsuit also argues that Media Market Group's pornographic film harms Lucasfilm's reputation.

Linda Wildblood, a partner at Media Market Group, said Wednesday that her company's movie is an animation parody.

"Just like Scary Movie is a spoof of horror movies, Star Ballz parodies many different movies and themes," she said. "No one in their right mind could look at it and say this is Star Wars.'"