The legal team of Ted Olson and David Boies have filed their final brief asking a federal appeals court in California to let the weddings of gay and lesbian couples resume while the court considers the constitutionality of the state's gay marriage ban, Proposition 8.

Last year, U.S. District Judge Vaughn Walker ruled the 2008 voter-approved law unconstitutional.

Supporters of the ban, however, appealed the decision and the Ninth Circuit Court of Appeals placed Walker's ruling on hold.

The appeals court heard oral arguments in the case in December, but then turned to the California Supreme Court to decide whether the law's sponsors have the legal standing to defend it in court. The high court has said it won't hear arguments in the case until September.

The plaintiffs' lawyers have asked the appeals court to lift its stay and allow the gay weddings to resume, arguing that it's highly unlikely that the law's backers will prevail in their legal challenge.

“Proposition 8 – and the stay that allows it to remain in force – is causing great damage,” the lawyers wrote in their brief. “It is not merely deferring wedding dates, as Proponents suggest. For those near the end of life, it is denying the right to marry outright.”

“Proposition 8 carries an unmistakable message – transmitted and enforced by the State and tolerated by this Court – that gay men and lesbians are members of a class of persons unworthy of the fundamental right of marriage and the 'protection of equal laws.'”

It is not known when the appeals court will issue its ruling on the motion.