Same-sex marriages were halted in California by a US court until December while the battle over gay rights might even end up in the appeal being sent to the Supreme Court.
The decision by the federal court of appeals came hours after gay marriage opponents urged a ban on the unions to be maintained in the West Coast state, after a judge earlier this month made a landmark decision to overturn it.
The Ninth Circuit Court of Appeals granted the motion for a stay and scheduled further proceedings on the appeal to take place the week of December 6 in San Francisco.
The ruling halted an anticipated rush of gay marriages after Judge Vaughn Walker last week authorized same-sex weddings to begin again on August 18, allowing a week for the court of appeals to consider the issue.
Opponents of gay marriage argued in their appeal that most of the United States and the majority of countries worldwide do not allow gay marriage because the institution of marriage serves a societal interest.
"California, 44 other states, and the vast majority of countries throughout the world continue to draw the line at marriage because it continues to serve a vital societal interest," the appeal said.
The purpose of marriage is between members of the opposite sex "to channel potentially procreative sexual relationships into enduring, stable unions for the sake of responsibly producing and raising the next generation," it said.