On May 15, 2008, the California Supreme Court ruled that it is unconstitutional for the state to ban same-sex couples from civil marriage. The ACLU Foundation of Northern California and co-counsel represent a group of committed lesbian and gay couples as well as two non-profit organizations, Equality California and Our Family Coalition. Our co-counsel are the National Center for Lesbian Rights, Lambda Legal, Heller Ehrman LLP, and the Law Office of David C. Codell.
https://www.aclunc.org/our-work/legal-docket/re-marriage-cases