A Minnesota Court of Appeals on Monday overturned a lower court's ruling dismissing a lawsuit challenging the constitutionality of the state's ban on gay marriage, the Star Tribune reported.

The case will now go to trial in the Hennepin Country District Court where it was originally filed.

“We have achieved a great victory today,” said Peter Nickitas, a lawyer for Marry Me Minnesota, the nonprofit group representing the plaintiffs. “We're back in the District Court, and we're fighting it out.”

Voters in the state will decide in November whether to amend the Minnesota Constitution to define marriage as a heterosexual union.

The case was filed on May 11, 2010 by three gay couples: Doug Benson and Duane Gajewski; Thomas Trisko and John Rittman; and Jessica Dykhuis and Lindzi Campbell along with their 2-year-old son Sean.

Benson, who also serves as executive director of Marry Me Minnesota, called the ruling a win.

“It's a win for us personally. It's a win for same-sex couples across the state. It's a win for the Constitution, for justice,” he said.

However, the state's largest gay rights advocate, OutFront Minnesota, warned that the Minnesota Supreme Court would likely rule against the plaintiffs.

“Most legal analysts believe that, in all likelihood, means they would rule against the plaintiffs and have the potential to set back LGBT equality,” Phil Duran, legal director for the group, told the paper.

In its 15-page decision, the court said plaintiffs had a right to go make their case.