Same-sex union legislation legislation of unregistered cohabitation was introduced in the Netherlands in June 1979. However, the first substantial recognition of same-sex couples didn't occur before the introduction of a new legal form, that of registered partnerships, which was first enacted in Denmark in June 1989. Many countries have followed with similar legislation since then. Legislation of these forms of legal unions still occur with a variety of different names, even after the introduction of same sex marriage, although sometimes they are overwritten by subsequent legislation of same-sex marriage. There are currently seventeen countries that have an alternative form of legal recognition other
Same-sex marriage in Montana Civil Liberties Union (ACLU) appealed that decision to the Montana Supreme Court on August 4, arguing that the marriage amendment does not preclude providing rights other than the name "marriage" to same-sex couples. On December 17, 2012, that court in a 4-3 decision denied the plaintiffs request to find Montana's entire "statutory scheme" unconstitutional, but invited them to renew their suit in District Court by specifying the statutes they were challenging. 436 same-sex couples married in Montana in the first year after the state's same-sex marriage ban was struck down. The Montana Supreme Court in "Snetsinger v. Montana University System"