Dustin Lance Black has penned and Joe Mantello will direct a new play based on the trial over the constitutionality of California's gay marriage ban, Proposition 8, The New York Times reported.

The 13-day trial, held last year in San Francisco, resulted in Judge Vaughn Walker, now retired, declaring the 2008 voter-approved amendment unconstitutional. Proponents of the ban appealed the ruling, and gay and lesbian couples in California remain banned from marrying.

Black, who won an Academy Award for penning Milk, the 2009 biopic on the life of gay activist Harvey Milk, and who is openly gay, told the paper that his new play, which is simply titled 8 and is based on the trial transcripts and interviews, was six months in the making.

“I mined the best arguments on both sides, trying to capture everything on their side that was a winning point and anything on our side that was a winning point,” he said.

The play will premiere on September 19 at Broadway's Eugene O'Neill Theater. Subsequent productions are planned at Carnegie Mellon University, Northwest, and the University of Michigan.

Tony Award-winning actor and director Joe Mantello will direct the play's premiere.