Angels & Demons (film) with author Dan Brown. In May 2006, following the release of the 2006 film adaptation of "The Da Vinci Code", Sony Pictures hired screenwriter Akiva Goldsman, who wrote the film adaptation of "The Da Vinci Code", to adapt "Angels & Demons". Filming was originally to begin in February 2008 and was originally going to be released on December 19, 2008, but because of the 2007–2008 Writers Guild of America strike, the film was pushed back for May 15, 2009. David Koepp rewrote the script before shooting began. Director Ron Howard chose to treat "Angels & Demons" as a sequel to
The Da Vinci Code are on the level of generalized or otherwise unprotectable ideas." Perdue appealed, the 2nd US Circuit Court of Appeals upheld the original decision, saying Mr. Perdue's arguments were "without merit". In early 2006, Michael Baigent and Richard Leigh filed suit against Brown's publishers, Random House. They alleged that significant portions of "The Da Vinci Code" were plagiarized from "Holy Blood, Holy Grail", violating their copyright. Brown confirmed during the court case that he named the principal Grail expert of his story Leigh Teabing, an anagram of "Baigent Leigh", after the two plaintiffs. In reply to the suggestion that Henry Lincoln