Does the state of Rhode Island recognize California registered domestic partnerships?

Yes, the state of Rhode Island recognizes California registered domestic partnerships. In 2011, the Rhode Island Supreme Court ruled that the state must recognize same-sex marriages and civil unions performed in other states, including California's registered domestic partnerships. This decision was based on the principle of equal protection under the law, which requires states to treat same-sex couples equally to heterosexual couples. As a result of this ruling, Rhode Island is one of the states that recognizes California registered domestic partnerships as valid legal relationships.