About Us


With offices in Pennsylvania (Philadelphia and Pittsburgh), New Jersey, Delaware, New York (Manhattan and Westchester County) and Maryland, Marks, O’Neill, O’Brien, Doherty & Kelly, P.C. offers our clients a regional approach to their litigation needs.

We partner with clients from the private and public sector to corporations and the self insured to meet their litigation needs. Our firm offers a full range of options to help resolve legal matters of all levels of complexity in a cost effective manner. We represent and vigorously defend parties involved in a variety of practice areas. To learn more about our expertise, please visit the practice area section of our website.

Our lawyers and paralegals have vast experience managing litigation on regional and national levels. We work closely with each of our clients to assemble a dynamic team that will meet and exceed our clients’ expectations. At Marks, O’Neill, O’Brien, Doherty & Kelly, P.C., we pride ourselves on our integrity, providing the best client experience, and delivering value. We seek to be available for our clients and give them the service and attention they deserve.