Attorneys for a Georgia woman who claims she lost her hospital job because of her sexual orientation have filed suit with the United States Supreme Court, setting up another potential landmark case about discrimination.

Lambda Legal, a gay rights advocacy group, and Stanford law professors Jeffrey Fisher and Pamela Karlan filed their petition with the Court on Thursday morning. The move had been expected since July, when Lambda Legal said it would appeal Jameka Evans’ case, Evans v. Georgia Regional Hospital.