Lawyers representing Michigan argue in a brief filed Friday that a recent appeals court ruling upholding the state's ban on gay marriage invalidates the marriages of 300 gay and lesbian couples.

The weddings took place in four counties the day after U.S. District Judge Bernard Friedman struck down Michigan's ban on March 21, a Friday. The Cincinnati-based Sixth Circuit Court of Appeals issued a stay on Friedman's ruling after 300 couples had exchanged vows.

While the federal government said that it will honor the marriages, Republican Governor Rick Snyder refused to do so, prompting eight of the couples to file a federal lawsuit to have their marriages recognized by the state.

On November 6, a 3-judge panel of the Sixth Circuit Court of Appeals upheld Michigan's ban and those in Ohio, Kentucky and Tennessee.

“Consequently, from a legal standpoint, because the marriages rested solely on the district court's erroneous decision, which has now been reversed, it is as if the marriages never existed, and Plaintiffs' requests for benefits attendant to a legal marriage must be denied,” the state said in its filing.

Plaintiff couple Frank Colasonti Jr. and James Ryder told The Detroit News that they were “shocked and angry that the state of Michigan would continue to argue that our legal marriages are null and void.”

Plaintiffs have until November 21 to file supplemental briefs.

(Brief provided by Equality Case Files.)