Law firms in D.C. continue to abandon their traditional style of office in favor of more open, collaborative workspaces, with the latest moving from the East End to Dupont Circle. Goodwin moved in Monday to its 93K SF space on the upper floors of JBG Smith’s new 1900 N St. NW development, designed by KPF Architects, with FOX Architects as the architect of record who coordinated and saw the project through to completion.