Overview
John is the managing partner of Constangy’s Princeton office and co-managing partner of the Northern New Jersey office.
He represents employers in employment and labor litigation, with particular focus on restrictive covenant disputes, including non-competition, non-solicitation, and non-disclosure agreement litigation. John also handles FINRA securities arbitration, securities industry litigation, and advises emerging businesses and start-ups.
John has extensive trial experience in both state and federal courts across New Jersey, Connecticut, Pennsylvania, and New York. He has successfully argued cases before the New Jersey Appellate Division, the New Jersey Supreme Court, and the United States Court of Appeals for the Third Circuit. John regularly counsels clients on employment issues, litigation strategies, and risk management to support their long-term business goals.
Before attending law school, John worked as a financial analyst in the European bond department at Bloomberg, L.P., giving him valuable insight into financial services operations and regulatory environments. This business background informs his practical approach to legal issues, particularly in matters involving the securities industry and start-up enterprises.
Experience
Representative Matters
- Degangi v. Regus Business Management, LLC, et als., Supreme Court of the State of New York, March 28, 2013, Index No.: 158564/2012; obtained total dismissal of Complaint in suit based upon various negligence theories.
- Patrick M. O’Donnell, et al. v. Nightlife, DBA Dusk, et als., Superior Court of New Jersey, March 15, 2013, Docket No. L-398-12; obtained dismissal of Plaintiffs’ breach of contract, fraud and wage and hour claims; affirmed at the New Jersey Supreme Court.
- McGovern v. Southwest Airlines, United States District Court, D. New Jersey, January 8, 2013, 2013 WL 135128; obtained dismissal of the Complaint, in full, and termination of all of Plaintiff’s claims in this NJLAD case.
Credentials
Education
Quinnipiac College School of Law
- J.D., 1994
- Outstanding Legal Scholarship Award
University of Richmond
- B.A., 1989
Languages
- French
Media
News
Legal Analysis
Constangy Streaming
John E. MacDonald, Partner - Princeton, NJLeigh E. Tyson, Partner - Atlanta, GA
Services
Industries
Admissions
- New Jersey, 1994
- New York, 1993
- Connecticut, 1993
- Pennsylvania, 1994
- U.S. Court of Appeals, Third Circuit
- U.S. District Court - CT
- U.S. District Court - NJ
- U.S. District Court - NY - E.D., N.D.. S.D.
- U.S. District Court - PA - E.D., M.D., W.D.
"The positive thinker sees the invisible, feels the intangible, and achieves the impossible."
Winston Churchill
