(NEWSER) – A heterosexual couple in the UK has lost the first legal battle in an unusual equality fight. Rebecca Steinfeld, 34, and Charles Keidan, 39—who've been together since 2010 and have an 8-month-old baby—petitioned the High Court to grant them a civil partnership because they see marriage as "patriarchal," reports the Guardian.
The problem: Only same-sex couples are eligible. In fact, same-sex couples can now choose marriage or a civil partnership in the UK, while straight couples can only marry—which Steinfeld and Keidan say is "incompatible with equality law." On Friday, however, a judge struck down their challenge. "Just as the UK was under no obligation to extend marriage to same-sex couples, it has never been under an obligation to extend civil partnership to heterosexual couples," he wrote.