SAN DIEGO—A San Diego federal judge has denied a request from gun owners for a temporary restraining order to block a newly signed state law that allows their personal information to be shared with a research center studying gun violence. The suit filed earlier this month by the National Rifle Association on behalf of five gun owners identified as John and Jane Does—three of whom are San Diego County residents—seeks to block enforcement of Assembly Bill 173, which amended state laws to allow disclosure of gun owners’ personal information to the California Firearm Violence Research Center at University of California—Davis. The research center also has discretion to make the information available “to any other nonprofit bona fide research institution accredited by the United States Department of Education or the Council for Higher Education Accreditation, as specified, for the study of the prevention of violence.” According to the law, the identifying …