Shea O'Brien Foley, 30, was arrested Oct. 8 in Burbank, where he worked at the facilities department of NBC studios, according to a report in the Marin Independent Journal.
He is accused of taking the "Star Wars" items while employed as a production assistant at George Lucas' company, Marin County Deputy District Attorney Paul Haakenson said.
Foley was released from Los Angeles County jail after posting $200,000 bail, Haakenson added. He faces four counts of unlawful access to a computer system and nine counts of grand theft, and could face up to seven years and four months in prison if convicted.
Lucasfilm began investigating after a bootlegged copy of "Episode II" was reviewed on the movie Web site Aint-It-Cool-News.com in March, about two months before the movie's May 16 theatrical release.
Foley was fired from Lucasfilm last spring after company investigators discovered he had downloaded computer files from the film production to his laptop computer, and removed concept drawings and other collectibles. He could not immediately be located for comment Wednesday.
Lynne Hale, spokeswoman for Lucasfilm, said the company had no official comment.