Jeffrey Zarrillo (L) and his partner Paul Katami (2nd L) and Sandy Stier (R) and her partner Kristin Perry enter the federal courthouse in San Francisco, California in this July 2, 2009 file photo. The biggest U.S. gay rights battle next year is brewing in a California federal court as raucous fights over same-sex marriage in state legislatures and at state ballot boxes subside.
REUTERS/Robert Galbraith/Files (UNITED STATES - Tags: POLITICS SOCIETY)