Mark A. Sereni, Esquire
Practicing law in Delaware County for more than 35 years, Mark concentrates in civil litigation (including the areas of medical malpractice, serious personal injury, employment law, commercial litigation, and defamation, libel and slander); and in school and municipal law. Mark is also the founder of Jury-FocusedSM, a jury consulting service.
Lauded by the Delaware County Daily Times for his “great intelligence, skill, courage and – most importantly – integrity.” – Delaware County Daily Times, September 28, 2010.
Professional Qualifications
Education:
University of Pennsylvania School of Law, 1987
St. Joseph’s University, 1984
Admitted to Practice:
- Supreme Court of the United States
- United States Court of Appeals for the Third Circuit
- United States District Court for the Eastern District of Pennsylvania
- Supreme Court of Pennsylvania
- Superior Court of Pennsylvania
- Courts of Common Pleas, Pennsylvania
Positions and Associations:
- President, Delaware County Trial Lawyers Association
- Solicitor, Marple Newtown School District
- Solicitor, Springfield School District
- Member, The National Trial Lawyers
- Member, Guy G. DeFuria American Inn of Court of Delaware County
- Member, Pennsylvania Association for Justice
- Member, American Association for Justice
- Member, Delaware County Bar Association
- Member, Pennsylvania Bar Association
- Member, American Bar Association
- Member, Pennsylvania School Boards Association
- Member, National School Boards Association
- Special Counsel, Delaware County School Districts
- Member, NELA, The National Employment Lawyers Association
- Member, The Eastern Pennsylvania Chapter of the National Employment Lawyers Association
- Volunteer Member, Concord Township Public Safety Advisory Committee
- Solicitor, Concord Townwatch
Former Positions and Associations:
- Delaware County Assistant District Attorney, Trial Division
- Instructor, Intensive Trial Advocacy Program for Widener University School of Law
- Judge, ATLA/Moe Levine Trial Competition
- Director, Life Guidance Services Board of Directors
Awards and Honors:
- Named to the Martindale-Hubbell Bar Register of Preeminent Lawyers – AV Rating
- Named Delaware County Top Lawyers in the field of medical malpractice, by Delaware County Daily Times’ Reader Choice, 2022, 2023 & 2024
- Named to the Pennsylvania Super Lawyers list, Philadelphia Magazine and Law and Politics, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 & 2024
- Named to the Top 100 Civil Plaintiff Trial Lawyers in Pennsylvania list by The National Trial Lawyers, 2021, 2022 & 2023
- Named Delaware County Best Lawyer in the field of medical malpractice, by Delaware County Daily Times’ Reader Choice, for 3 consecutive years, 2019 – 2021
- Named to the Top Lawyers list, Main Line Today Magazine, 2018, 2019, 2020, 2021, 2022, 2023 & 2024
- Named 2018 Delaware County Best Lawyer in the field of employment discrimination, by Delaware County Daily Times’ Reader Choice
- Named 2016 Delaware County Best Lawyer in the field of trial work, by Delaware County Daily Times’ Reader Choice, finishing tied for first place
- Named 2015 Delaware County Best Lawyer in the field of employment law, by the Delaware County Daily Times Reader Choice issue, finishing tied for first place
- Named to the Awesome Attorneys list compiled by Avvo Inc., Suburban Life Magazine, 2010, 2011
- Named to the Top Lawyers list, Main Line Today Magazine, 2011
- Named to the Awesome Attorneys list compiled by Avvo Inc., Suburban Life Magazine, 2010
- Named to the Top Lawyers list, Main Line Today Magazine, 2009
Activities:
- Marple Newtown School District Sponsor-A-Scholar Program
- Big Brothers/Big Sisters Mentoring Program
- St. Joseph’s University Mentoring Program
- University of Pennsylvania Law School Mentoring Program
- Association of Trial Lawyers of America Mentoring Program
- Lawyer/Doctor Education Team Partnership Against Drug and Alcohol Abuse
- Speaker’s Bureau, Delaware County Bar Association
- Director and Treasurer, Garnet Valley Woods Community Association Executive Board
Contact the Law Firm of DiOrio & Sereni, LLP
For a private consultation, call us at 610-565-5700 or send us an e-mail. Evening and weekend consultations can be arranged upon request, and we will travel to meet with you, if necessary. We accept Discover, Visa and MasterCard.
