dan brown in court

yesterday, dan brown appeared before the high court in london. richard leigh and michael baigent, two of the authors of the 1982 the holy blood and the holy grail, claim brown's the da vinci code is based on their non-fictional work. they are suing random house, who actually published both books.
if a judge buys these boys' story, the film version of the da vinci code, directed by ron howard, may be delayed.
or is this just a media stunt from brown's marketing consultant to get some extra attention for the release of the film?
anyway, verdict in about two weeks.