Premium cable network HBO on Tuesday announced that it was producing a documentary based on the court battle to overturn Proposition 8, California's now ended gay marriage ban.

HBO said in a statement announcing the project that directors Ben Cotner and Ryan White have for years had exclusive access to the legal team of Ted Olson and David Boies, as well as the lives of the four plaintiffs in the case.

The documentary, which remains untitled, is expected to premiere sometime next year on HBO.

Last month, the Supreme Court dismissed an appeal by interveners to a lower court's decision which found Proposition 8 to be unconstitutional. The justices said proponents did not have legal standing to challenge the order. The high court's decision paved the way for same-sex marriages to resume in California.

Michael Lombardo, president of HBO Programming, called the upcoming feature “the story of a modern-day American revolution.”

It was not immediately clear whether the filmmakers had access to the trial proceedings – opponents successfully blocked release of videotaped testimony – but Boies said in a statement that opponents “cannot block this documentary.”

“Everyone who sees this film will understand the pain our fellow citizens feel when they are deprived of the right to marry the person they love – and why that pain is so unnecessary,” said Boies.