A federal judge Thursday asked lawyers for both sides of a lawsuit against California's gay marriage ban for a “plan of action” when they return to court, saying he wants to place the case on a fast track, the AP reported.

U.S. District Judge Vaughn Walker told lawyers that he would conduct a full trial because he expects the case to one day reach the U.S. Supreme Court.

The lawsuit was filed on May 22 by a lesbian couple and a gay couple who would like to marry in California but were denied a license because of Proposition 8, the voter-approved measure that bans gay marriage in the state.

The two couples are represented by Ted Olson and David Boies, who squared off nine years ago when the Supreme Court decided the presidential election. Both are considered brilliant constitutional lawyers, but their collaboration has raised eyebrows considering their opposing political viewpoints.

Walker denied Olson, who appeared alone, a preliminary injunction suspending Proposition 8, saying such a ruling would create confusion about the status of new marriages, but agreed a speedy resolution was in everyone's best interest.

“Every day that Proposition 8 is enforced perpetuates a tragic injustice on tens of thousands of Californians,” Olson told the court.

The lawsuit is a new strategy in the fight for gay marriage in California. Previously, advocates have avoided raising federal issues, fearing a misstep would put the movement back decades by creating a legal precedent.

With the backing of anonymous sources, Olson and Boies, outsiders to the gay rights movement, filed the motion anyway.

Gay rights groups initially called fighting the gay marriage ban in federal court a “very high risk proposition” but have since altered course. In legal briefs filed last week, the National Center for Lesbian Rights, Lambda Legal and the American Civil Liberties Union (ACLU) backed the lawsuit.

On June 30, the court ruled that the official campaign behind Proposition 8, ProtectMarriage.com, would be allowed to defend the measure after successfully arguing that California Attorney General Jerry Brown, who has called the measure unconstitutional, was unlikely to mount a vigorous defense.

The lawsuit is a high-stakes gamble for gay marriage activists who have previously advocated for a state-based approach that builds upon previous court rulings and legislative wins. But a favorable ruling in the Supreme Court would likely strike down 43 state bans simultaneously.

Olson said the case was headed to the Supreme Court: “We expect to win. The Supreme Court has repeatedly said the right to marry is fundamental.”

“I think Californians should be troubled that their vote, their decision on this matter continues to be challenged,” Andrew Pugno, a lawyer for ProtectMarriage.com, said after the hearing.

Lawyers are expected back in court August 19.