Plaintiffs are individuals from a variety of professional backgrounds who are in committed same-sex relationships. In 2010 they sued the State of Montana, complaining that they are unable to obtain protections and benefits that are available to similarly situated different-sex couples who marry under State law. Plaintiffs expressly do not challenge Montana law’s restriction of marriage to heterosexual couples, do not seek the opportunity to marry, and do not seek the designation of marriage for their relationships. They contend however that there is a “statutory structure” in Montana law that prohibits them from enjoying “significant relationship and family protections and obligations automatically provided to similarly-situated different-sex couples who marry…..”
You may find the whole ruling here (133 page pdf). For a couple of articles about it, check the Citizen link one here and the Huffington Post one there.