The U.S. Court of Appeals for the 9th Circuit has invalidated a Washington state law that prevented individuals from making contributions of more than $5,000 to PACs supporting ballot measures during the three weeks prior to an election.

The blackout period on contributions was challenged in a lawsuit filed by Family PAC, a political action committee that was formed to oppose Washington’s domestic partnership law.

While Family PAC was successful on the merits in challenging the blackout period, it was unsuccessful in its challenge to laws requiring PACs to report the name and address of anyone who contributes more than $25, and the occupation and employer of those who make contributions in excess of $100.