"He controls the room"

Mark is regularly named a Band 1 litigator by Chambers USA

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A history of service

In 1996, Mark became the first attorney to simultaneously serve as President of the Philadelphia Bar Foundation and Vice Chancellor of the Philadelphia Bar Association. He was also the youngest City Solicitor in the history of Philadelphia.

Fighting for equality

Mark led the Hangley Aronchick team in Whitewood v. Wolf, the case that struck down Pennsylvania's DOMA statute, paving the way for same-sex marriage.

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Mark Aronchick, a litigator and Chair of the firm, graduated with honors in 1974 from the University of Chicago Law School, where he was elected to the Order of the Coif. He received his BA, cum laude, from the University of Pennsylvania in 1971. A past Chancellor of the Philadelphia Bar Association, Mark was a member of Mayor William J. Green’s administration and was appointed as the youngest City Solicitor in the history of Philadelphia. 

In 1996, Mark became the first attorney to simultaneously serve as President of the Philadelphia Bar Foundation and Vice Chancellor of the Philadelphia Bar Association. Currently, he is a Fellow of the American College of Trial Lawyers (where he has chaired the Committee on the Federal Rules of Evidence), a past member of the Judicial Conduct Board of the Commonwealth of Pennsylvania, and a past member of the attorney Advisory Committee to the United States Court of Appeals for the Third Circuit.

Mark has been a member of both the Civil Rules Committee of the Supreme Court of Pennsylvania and the Judicial Council of the Commonwealth of Pennsylvania. He has also served as a member of the Disciplinary Board of the Supreme Court of Pennsylvania and the Bench-Bar Relations Task Force of the United States Court of Appeals for the Third Circuit. He has served as Chair of the City of Philadelphia Board of Ethics. He has also served as a federal and state court-appointed arbitrator and mediator and as a Judge Pro Tem of the Court of Common Pleas of Philadelphia County. A former Treasurer and member of the Philadelphia Bar Association’s Board of Governors, he has also co-chaired the Philadelphia Bar Association’s Trial Advocacy Course.

Mark has lectured on trial advocacy, litigation techniques, and professional ethics. He is an adjunct faculty member at the University of Pennsylvania Law School and in late 2015 taught in an LLM program offered by Temple University Law School at the Tsinghua Law School in Beijing, China.

He serves on the Board of the Defender Association of Philadelphia as well as on the boards of several other civic and community organizations. He has received numerous awards and citations for leadership of civic and Jewish community organizations and for pro bono publico projects.

Mark has a diverse national trial and appellate practice, including health care fraud and abuse, health care litigation, controversies involving financial institutions, antitrust, environmental, employment, securities, class actions, construction, professional malpractice, governmental, administrative, general business, and white-collar criminal defense cases.

Teaching & Lectures

“Bench-Bar Relations,” Third Circuit Judicial Conference, 1999

Numerous ethics and legal seminars, Pennsylvania Bar Institute

“Ethical Issues in Multidisciplinary Practice,” Price Waterhouse, 1998

Inn of Court, University of Pennsylvania

Memberships & Community

Philadelphia Bar Association
House of Delegates, 1997 – 2001
Chancellor, 1998
Vice Chancellor, 1996
Board of Governors, 1990 – 1992
Treasurer, 1986 – 1989

Philadelphia Bar Foundation
President, 1996
President-Elect, 1995
Vice President, 1994

Disciplinary Board, Supreme Court of Pennsylvania, 1997 – 1998

Judicial Conduct Board of the Commonwealth of Pennsylvania

Judicial Council of Pennsylvania

Chair, Committee on the Rules of Evidence, American College of Trial Lawyers, 2007 – Present

Advisory Committee to the U.S. Court of Appeals for the Third Circuit

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