Lawyers representing a class of same-sex couples in Virginia have moved to intervene in a pending case in the U.S. Court of Appeals for the Fourth Circuit that challenges the constitutionality of the state’s ban on gay marriage.

The proposed intervenors, whose lawyers include a team from Jenner & Block and the American Civil Liberties Union, filed papers in the Fourth Circuit on Feb. 26 in support of their effort to participate in Bostic v. Schaefer.