Section 299.2 Of Part 3. Termination From California Family Law Code >> Division 2.5. >> Part 3.
299.2
. A legal union of two persons of the same sex, other than a
marriage, that was validly formed in another jurisdiction, and that
is substantially equivalent to a domestic partnership as defined in
this part, shall be recognized as a valid domestic partnership in
this state regardless of whether it bears the name domestic
partnership.