Gibbons, Del Deo, Dolan, Griffinger & Vecchione — the 180-attorney Newark, N.J., firm that bears the name of the former chief judge of the 3rd U.S. Circuit Court of Appeals — has opened a Philadelphia office, with former U.S. Attorney David W. Marston joining the firm as a partner.

Marston joined May 1, but the firm is still moving into its new office space.