John D. Haggerty

John D. Haggerty

Director, Business & Commercial Litigation

This attorney has been selected for the recognitions mentioned herein, which have been conferred by the corresponding publications and/or organizations noted. An overview of the award selection methodologies for these recognitions can be found at Links to certain specific methodologies are embedded in individual entries. Results may vary depending on your particular facts and legal circumstances. No aspect of this advertisement has been approved by the Supreme Court of New Jersey.

Mr. Haggerty’s diverse practice focuses on complex litigation and investigations. He handles a wide range of matters in state and federal trial and appellate courts, including high-stakes commercial disputes, antitrust and competition matters, professional liability defense, and white collar litigation. Mr. Haggerty brings a practical, results-oriented approach to his practice. In addition to representing clients in active litigation, he provides pre-litigation counseling and advises businesses and individuals on risk management and compliance issues. He also has significant experience representing clients in connection with government and internal investigations.

Prior to joining the firm, Mr. Haggerty served as a law clerk to the Honorable Joel A. Pisano of the United States District Court for the District of New Jersey.

Areas of Focus

Complex Civil and Criminal Litigation

Mr. Haggerty maintains a broad-based litigation practice. He has experience litigating complex, often high-stakes disputes in both state and federal courts involving an array of subjects, including commercial contracts, business torts, antitrust, unfair competition, RICO, securities and common law fraud, legal malpractice defense, constitutional law, and white collar criminal defense.

Trade Secret and Restrictive Covenant Litigation

Mr. Haggerty has extensive experience pursuing and opposing applications for emergent injunctive relief in state and federal courts, with particular focus on trade secret and restrictive covenant litigation. Representative clients span numerous industries, including technology, communications, financial services, manufacturing, logistics, and consumer products.


Mr. Haggerty is a member of the firm’s Appellate Team. He has handled appeals in state and federal courts involving a range of complex issues across various substantive areas, including bankruptcy, employment, intellectual property, real estate, and constitutional law. He has experience in all stages of the appeals process – from initial strategic evaluation to applications for emergent relief, motions for leave to appeal, and appeals from final orders.

Government and Internal Investigations

Mr. Haggerty has represented boards, committees, nonprofits, and Fortune 500 companies in connection with significant investigations focused on a variety of issues, including employee misconduct, business practices, disclosure obligations, and various other legal, compliance, and corporate governance matters.



The George Washington University Law School (J.D., with honors)

  • The George Washington Law Review
  • Thurgood Marshall Scholar
  • Writing Fellow
  • Alternative Dispute Resolution Board

Villanova University (B.A., magna cum laude)

  • Phi Kappa Phi Honors Society

Professional Admissions

State of New Jersey

State of New York

United States District Court for the District of New Jersey

United States Court of Appeals for the Third Circuit

Professional Activities

Lead Barrister, John C. Lifland American Inn of Court

New Jersey State Bar Association

Judicial Clerkship(s)

Law clerk to the Honorable Joel A. Pisano, United States District Court for the District of New Jersey, Trenton, NJ, 2011-2012