About Mark D.
Mark D. Hannan is an attorney admitted to practice in both New York and New Jersey. He practices under the name Mark D. Hannan, Lawyer at Law and works with clients who have matters that cross state lines or arise under either state’s rules.
He completed his legal education before seeking admission to the bars of New York and New Jersey. Those dual admissions shape the way he approaches cases and client work. Being licensed in two states means juggling different procedural rules, statutory schemes and court calendars. He has built a practice that accounts for those differences.
Early in his career he handled matters that required attention in each state’s courts and administrative bodies. Over time he organized his practice to serve clients who need counsel in both jurisdictions. He maintains a solo practice structure that allows him to manage files closely and respond directly to client needs. The firm name he uses reflects that arrangement.
Colleagues describe him as someone who pays attention to the mechanics of a case. He prepares filings, negotiates on behalf of clients and appears where necessary before state tribunals. His work involves coordination across New York and New Jersey rules and local practices. That often means lining up deadlines, coordinating discovery and making sure procedural steps are taken in both jurisdictions when a matter overlaps state boundaries.
Clients come to him for representation that acknowledges the practical differences between the two jurisdictions. He advises individuals and businesses on matters arising under New York and New Jersey law and takes on disputes and transactional questions that require local knowledge. He handles the day-to-day legal tasks that keep a case moving, including court filings and client counseling, and steps into litigation when a matter proceeds to trial or hearing.
Outside the immediate casework, he keeps an eye on developments in both states that affect how cases are litigated and how transactions are structured. That attention helps when clients face deadlines or need quick legal evaluations. He operates a private practice under his own name and provides direct counsel to clients in both states. He currently focuses his practice on advising and representing clients in matters governed by New York and New Jersey law.
