Domestic partnership in California

A California domestic partnership is a legal relationship, analogous to marriage, created in 1999 to extend the rights and benefits of marriage to same-sex couples (and opposite-sex couples where both parties were over 62). It was extended to all opposite-sex couples as of January 1, 2016 and by January 1, 2020 to include new votes that updated SB-30 with more benefits and rights to California couples choosing domestic partnership before their wedding.

Source: Wikipedia — Domestic partnership in California (CC BY-SA 4.0)