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About me

Jonathan Holtz is an associate at Margolis Edelstein devoting his practice almost exclusively to professional liability defense, primarily in the areas of accounting malpractice and legal malpractice. Mr. Holtz defends claims in state and federal courts, on the trial and appellate levels, as well as before local agencies such as the New Jersey State Board of Accountancy.

Margolis Edelstein has represented individuals, business and insurers for almost fifty years. We have earned the Martindale-Hubbell legal ability rating of AV, signifying very high to preeminent, the highest rating available. Our firm is composed of results oriented, client focused legal professionals who strive to exceed expectations in an efficient and cost effective manner.

We have represented clients throughout the U.S. As a founding member firm of The Harmonie Group, an international association of independent law firms, we are uniquely positioned to address client’s needs globally. The Harmonie Group (, together with the Canadian Litigation Counsel ( and affiliates in Asia, Europe and South America, enable our team to call upon resources not available to other firms.

Our territory area includes nine offices across Delaware, New Jersey, Pennsylvania and West Virginia. We encourage you to examine the testimonials section of our site to view the comments of clients we have had the privilege of representing.

We welcome your questions and comments regarding any aspect of our practice.


Practice areas


  1. Litigation: 70%
    7 years
  2. Insurance: 20%
    7 years
  3. Personal Injury: 10%
    7 years

Attorney endorsements

3 total 

Are you an attorney? Endorse this lawyer

  • Christian K. Lassen II

    I endorse this lawyer.


    Christian Lassen Personal Injury Attorney
    Relationship: Fellow lawyer in community

  • Annabelle Steinhacker

    I have worked with Jon generally in the legal community and as an adversary on individual cases. He is professional and effective and a pleasure to work with. He understands the business of law as well as the importance of client relationships.


    Annabelle Steinhacker Appeals Attorney
    Relationship: Opposing Counsel on matter

Contact info

Margolis Edelstein

400 Connell Drive
Suite 5400
Berkeley Heights, NJ, 07922


We have not found any instances of professional misconduct for this lawyer.
Avvo contributions
Legal answers
Work experience
TitleCompany nameDuration
AssociateHardin, Kundla, McKeon & Poletto2012 - 2012
AssociateFishman McIntyre, PC2010 - 2012
AssociateWiley Malehorn Sirota & Raynes2008 - 2010
Judicial Law Clerk to The Honorable Alfonse J. Cifelli, J.S.C.State Superior Court Of New Jersey, Essex County2007 - 2008
Association namePosition nameDuration
Professional Liability Underwriting SocietyN/A2013 - Present
Defense Research InstituteN/A2013 - Present
New Jersey State Bar AssociationN/A2007 - Present
Seton Hall University, School of Law, Moot Court JudgeN/AN/A
Seton Hall University, School of Law, Appellate Advocacy JudgeN/AN/A
New York State Bar AssociationN/AN/A
Legal cases
Case nameOutcome
Rabinowitz v. WahrenbergerAffirmed
See all legal cases 
Publication nameTitleDate
Margolis Edelstein2015 Professional Liability and Legal Malpractice Update2015
Margolis Edelstein2014 Professional Liability and Legal Malpractice Update2014
School nameMajorDegreeGraduated
Seton Hall University School of LawLawJD - Juris Doctor2007
University of Richmond, The T. C. Williams School of LawPsychologyBA - Bachelor of Arts2003
Speaking engagements
Conference nameTitleDate
2015 NJAJ Boardwalk SeminarAn Overview of Policy-Specific Insurance Considerations in Litigation2015
Boardwalk Seminar 2014How to Avoid the Pit-Falls of Affidavits of Merit in Professional Liability Cases2014