An adoption lobby group says New Zealand's Adoption Act is discriminatory and has filed a claim with the Human Rights Review Tribunal seeking a hearing.
Adoption Action Inc says the 1955 law is out of touch with society, and is breaching the Bill of Rights and the Human Rights Act.
A committee member, Robert Ludbrook, says the act discriminates against prospective parents on the grounds of age, disability, marital status and sexual orientation.
Mr Ludbrook says the law is well overdue for an overhaul, having been passed more than 50 years ago. His group is waiting for a hearing date on the matter.
Human Rights Commission spokesperson Gilbert Wong says a review of the Adoption Act is long overdue
Mr Wong says one of the things that was clear in a major review of human rights in New Zealand conducted by the commision last year was that people of all sexual orientation are entitled to the full enjoyment of all human rights, and one of those is the right to form a family.