20th Century Fox said on Monday it will seek an injunction to block release of the Warner Bros movie "Watchmen" after a Los Angeles court ruled a copyright lawsuit against Warner can go forward.

"The Watchmen" is directed by Zack Snyder (300), with a budget around $120 million, is based on a 1980s DC Comics graphic novel written by Alan Moore and illustrated by Dave Gibbons. The movie, which has already been shot is slated for release on March 6, 2009. Watchmen stars Patrick Wilson, Carla Gugino, Billy Crudup and Jackie Earle Haley as a band of former superheroes who find themselves reclassified as criminal vigilantes in an alternate universe circa 1985. As an unknown assassin begins to hunt them down, the heroes try to unravel a conspiracy and thwart a nuclear war.

Fox argues it acquired motion picture rights to the "Watchmen" graphic novel in the last 1980s, and that even though it relinquished certain rights to the material in 1991 it held onto the right to distribute the first movie. Fox filed its lawsuit against Warner Bros in February. Fox's accusations against its rival studio included copyright infringement, interference with contract and breach of contract.

In his decision released last week, Judge Gary Feess of the U.S. District Court for the Central District of California wrote that Fox could hold some of the rights to the material, even if it did not hold all rights.

Fox spokesman Gregg Brilliant said:

"We will be asking the court to enforce Fox's copyright interests in "The Watchmen" and enjoin the release of the Warner Brothers film and any related 'Watchmen' media that violate our copyright interests in that property."

Hopefully this will be resolved by next March when the movie is expected to debut.