John M. Delehanty: Lawyer with Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C.

John M. Delehanty


Peer Rating
AV® Preeminent

Client Rating

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Experience & Credentials Ratings & Reviews

Practice Areas

  • IP Litigation
  • Intellectual Property & Technology Litigation
  • Litigation
  • Arbitration
  • Mediation & Alternative Dispute Resolution
  • Securities Litigation
  • Intellectual Property
  • Valuation & Assessment
  • Energy Technology
  • Financial Services
  • Health Care
  • Insurance
  • Life Sciences
  • Nonprofits
  • Professional Services
  • Real Estate
  • Retail & Consumer Products
  • Sports
  • Arts & Entertainment
  • Technology
  • Communications & Media
  • Education
Contact InfoTelephone: 212.692.6703
Fax: 212-983-3115
University Brown University, B.A., 1966
Law SchoolUniversity of Chicago, J.D., 1969
Admitted1971, New York

Professional & Community Involvement:
•Chair, Subcommittee on Unique Issues in Patent Mediations, CPR Institute Patent Mediation Task Force
•Past chair, New York City Bar Association Committee on Professional Ethics
•Past panel Chair, New York State Unified Court System First Department Disciplinary Committee
•Member, AIPLA
•Member, NYIPLA
•Member, AIPLA ADR Committee
•Past member, NYIPLA Board
•Past member, AIPLA Amicus Committee
•Founding chair, NYIPLA Internet Law Committee
•Past president (2005 - 2008), American Intellectual Property Law Education Foundation
•Member (2012 - 2013), Intellectual Property Owners Association (IPO) Arbitration and Mediation Committee


John is a trial lawyer with over 40 years of experience in litigating patent, trademark, antitrust, corporate, and employment matters for companies throughout the United States. He is also an experienced mediator and arbitrator.

In addition to litigation, John's intellectual property practice includes counseling clients, including a major pharmaceutical manufacturer, on patent, trademark, copyright, trade secret, and licensing issues. John is also knowledgeable about legal ethics and professional discipline.

John is a frequent speaker on intellectual property litigation issues at AIPLA meetings. He is also a committed advocate of diversity in the legal profession, and he serves on the firm's Diversity and Pro Bono committees.

John began his career as a litigator at Paul Weiss Rifkind Wharton & Garrison. He co-founded Parker Auspitz Neeseman & Delehanty, which became the New York office of Morrison & Foerster. Before co-founding the New York office of Mintz Levin, he was a litigation partner at O'Sullivan Graev & Karabell.


•Quoted in 5 Tips for Making Patent Law Painless for Juries, Law360 (08.23.2013)
• Mintz Levin Attorney John M. Delehanty Appointed to Patent Mediation Task Force by International Institute for Conflict Prevention & Resolution, (12.19.2011)
• Mintz Levin to Host CPR Institute Event for Young Attorneys on Successful Alternative Dispute Resolution Strategies for Life Science Companies, (10.19.2011)
• Twenty Mintz Levin Attorneys Named 2011 New York Super Lawyers and Rising Stars, (09.23.2011)
• Eighteen Mintz Levin Attorneys Named 2010 New York Super Lawyers, (09.29.2010)
• Ten Mintz Levin Attorneys Named New York Metro Super Lawyers, (09.24.2007)


•Co-author, Client Brief: The Benefits of Mediation and/or Arbitration over Trial, (02.03.2011)

Speaking Engagements

•Speaker, Arbitration & ADR: A Look at Pros & Cons, Consequences, & Examples, Best Practices in Licensing: Developing, Negotiating & Executing Transactions, Licensing Executives Society (LES), New York, NY (11.06.2013)
•Panelist, The International Institute for Conflict Prevention and Resolution: Effective Practices Protocol for Patent Mediation, 28th Annual Intellectual Property Law Conference, American Bar Association, Arlington, VA (04.05.2013)
•Panelist, CPR Patent Mediation Task Force-Findings and Conclusions, 2013 Association of Corporate Patent Counsel Winter Meeting, ACPC, Orlando, FL (01.29.2013)
•Speaker, Confidentiality and Disclosure Issues for ADR Neutrals in Technology Disputes, ABA Section of Dispute Resolution Spring Conference, American Bar Association, Washington, DC (04.20.2012)
•Moderator, Successful ADR Strategies for Life Sciences Companies: What Young Lawyers Should Know, Mintz Levin and CPR Institute, Boston, MA (10.19.2011)
•Ethical Considerations Under Federal Rule of Civil Procedure 26 as Amended in December 2010, NYIPLA 27th Annual Joint Patent Practice Continuing Legal Education Seminar, (04.2011)
•Speaker, Do Attorneys Have an Ethical Obligation to Discuss ADR with Their Clients Under the Disciplinary/Ethical Rules and When Do They Have to Do It, 2010 Mid-Winter Institute, American Intellectual Property Law Association (01.29.2010)

Video Insights

John Delehanty explains the benefits of using mediation to resolve patent disputes.

Recognitions & Awards

•Distinguished Neutral, CPR International Institute for Conflict Prevention and Resolution
New York Super Lawyers: Intellectual Property Litigation, General Litigation (2006 - 2007, 2010 - 2011)
•Martindale-Hubbell AV Preeminent

Reported CasesRepresentative Matters: Representation of a leading offshore oil drilling equipment manufacturer in patent litigation with its principal competitor, including the successful appeal to the Federal Circuit and the negotiation of a highly lucrative license agreement; Representation of a major university in enforcement of its customer relationship management (CRM) software patent against an infringing manufacturer; Mediation of a false advertising dispute between the leading manufacturers of artificial sweeteners; Representation of the manufacturer of high-protein nutrition bars in patent litigation against its principal competitor; Representation of the world's largest stock transfer company in numerous securities, contract, UCC, and fiduciary obligation litigations; Successful defense of the criminal prosecution of a client for alleged tax fraud relating to the interstate sale of artwork; Representation of a European paper machine manufacturer in an arbitration in Singapore against an Indonesian customer; Mediator in a biotechnology dispute concerning the license for an innovative Hepatitis C drug; Mediator in a false advertising dispute between major consumer products companies concerning artificial sweeteners; Mediator in a dispute with a major automobile manufacturer concerning automotive repair services; Arbitrator in a dispute concerning patent royalties on a billion-dollar arthritis drug; Panel chair in an arbitration concerning patent royalties on an erythropoietin drug; Advocate in a mediation concerning the Lanham Act and false advertising issues relating to the Pentium trademark

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Office Information

John M. Delehanty

666 Third Avenue
New YorkNY 10017


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