The court’s decision not to hear the case leaves in place a September 2015 ruling by the San Francisco-based 9th U.S. Circuit Court of Appeals that the litigation could move forward as a class action representing advertisers who used the service between 2004 and 2008. Google is part of Alphabet Inc.(GOOGL.O)The 2008 lawsuit accused Google of violating California fair advertising laws because it misled advertisers about where the ads would be placed. The Adwords service was primarily aimed at placing ads next to relevant Google Internet search results. But the plaintiffs said Google should have disclosed that ads would also appear in undesirable places such as error pages and undeveloped websites known as parked domains.