The law firm that is advising county clerks in Florida not to issue marriage licenses to gay couples next month will file a brief on behalf of a gay dad in support of marriage equality.

Florida officials will begin issuing marriage licenses to gay couples after January 5, when the current stay on a federal judge's ruling striking down the state's ban on gay marriage expires.

The Supreme Court on Friday refused Attorney General Pam Bondi's request to extend the judge's stay as an appeal is pursued.

Bondi continues to argue that gay couples will only be allowed to marry in the one county named in the lawsuit. Lawyers representing the plaintiffs have repeatedly said that the ruling applies statewide.

The law firm Greenberg Traurig advised clerks not a party to the litigation against issuing such licenses starting next month.

“The advice provided by Greenberg Traurig to our client, the Florida Association of Clerks and Comptrollers, addresses a Florida clerk's duties under existing Florida law, which prohibits the issuance of same-sex marriage licenses,” Hilarie Bass, the firm's Miami-based co-president, told the Miami Herald. “Current Florida law makes it a crime – punishable by imprisonment or a fine – to issue a marriage license to a same-sex couple. Greenberg Traurig is not advising the clerks as to the constitutionality of the Florida ban on same-sex marriage.”

Bass added that the firm, which also represents Martin Gill, a gay man who successfully sued the state for the right to adopt his son, will on Monday file an amicus brief on behalf of Gill in Florida's Third District Court of Appeals “in support of two circuit court orders declaring unconstitutional Florida's ban on same-sex marriage.”