The plaintiffs who have accused Jones Day of systemically discriminating against women lawyers have expanded on their arguments against the firm, claiming in a 54-page court filing that the firm is trying to avoid court scrutiny of its black box compensation structure that has permitted discrimination.

The filing in the last week augments a number of the claims the plaintiffs—Nilab Rahyar Tolton, Andrea Mazingo, Meredith Williams, Saira Draper, Jaclyn Stahl and Katrina Henderson—made in their third amended complaint while countering Jones Day’s defense.