A legal malpractice suit against Trenk DiPasquale Della Fera & Sodono and two of its former lawyers should be dismissed, the firm said in recently filed court papers, because the trustee board of the Newark Watershed Conservation and Development Corp. had a vacant seat when it filed the complaint.

West Orange-based Trenk DiPasquale and the two former attorneys for the firm, Elnardo Webster II and Jodi Luciani, filed the motion to dismiss Monday in connection with Newark Watershed’s Chapter 11 case before U.S. Bankruptcy Judge Vincent Papalia of the District of New Jersey.