Law Office of Jennifer L. Marshall, LLC Law Office of Jennifer L. Marshall, LLC The Law Office of Jennifer L. Marshall, LLC is a criminal and family law firm located in Piscataway, NJ. The firm's managing partner, Jennifer Marshall advocates on behalf of those facing criminal charges such as DUI/DWI, drug, and theft charges. Attorney Marshall also provides guidance regarding family law issues such as divorce, child custody, and child support. If you are in need of legal assistance call (732) 412-3737 to schedule a consultation.