Diana Manning is Bressler’s Managing Principal. Diana has over two decades of experience in complex commercial litigation at both the trial and appellate levels. Diana is a Principal in Bressler’s New Jersey office, is Co-Chair of the firm’s Business and Commercial Litigation practice group, and spearheads the firm’s Appellate practice team. Diana has developed a successful track record of trial verdicts and settlements, especially in complex matters. She also has a reputation as a strategic, thoughtful, and fearless advocate for all of her clients.

A distinguished trial lawyer, Diana is Certified by the Supreme Court of New Jersey as a Civil Trial Attorney. She is also an accomplished appellate lawyer who has participated in six matters before the New Jersey Supreme Court, including arguing four times. Diana is an avid presenter and author on business litigation, legal ethics, and professional liability. She is the author of the New Jersey Chapter of The Law of Lawyer’s Liability: Fifty-State Survey of Legal Malpractice, ABA/First Chair Press, which provides an overview of the laws governing attorney malpractice in each state. 

To date, Diana’s distinguished career has brought her offices and honors from many professional and legal industry organizations. Diana served on the District XA Ethics Committee for 10 years and was appointed Chair by the New Jersey Supreme Court from 2017-2019, she is a member of the New Jersey State Bar Association’s Board of Trustees, and is currently Chair of its Amicus Committee, and Vice Chair of its Appellate Practice Committee. She is also President Elect of the New Jersey Women Lawyers Association, and is a Past President of Trial Attorneys of New Jersey, the Morris County Bar Association, and the Morris County Bar Foundation. Rated AV-Preeminent by Martindale-Hubbell, she has also been professionally recognized as a “Top 100 Lawyers in New Jersey” by Super Lawyers and a “Top 50 Women Lawyers in New Jersey”, a Top Women Lawyerby the New Jersey Law Journal, and named in Best Lawyers - The Best Lawyers in America list. In 2017, Diana received the Professional Lawyer of the Year Award conferred by the New Jersey Commission on Professionalism in the Law.

Awards & Accolades

  • Certified by the Supreme Court of New Jersey as a Civil Trial Attorney, (March 2011 - present)
  • Recognized in Super Lawyers, "Top 100 Lawyers in New Jersey," 2018, 2019, 2020, 2021
  • Recognized in Super Lawyers, “Top 50 Women Lawyers in New Jersey,” 2013, 2017, 2018, 2019, 2020, 2021
  • Recognized in New Jersey Super Lawyers, 2009-2021
  • Recognized in The Best Lawyers in America®, 2015-2021
  • Recognized as “Lawyer of the Year,” 2020, in the area of Professional Malpractice Law – Defendants in Newark
  • Fellow, American Bar Foundation
  • Recognized in New Jersey Law Journal's "Top Women in Law," 2016, 2020
  • Recognized in NJBIZ Vanguard Series: "Leaders in Law," 2018
  • Recognized on the Super Lawyers “Rising Stars” List, 2006-2007
  • Martindale-Hubbell AV® Preeminent Rating
  • Martindale-Hubbell's “Bar Register of Preeminent Women Lawyers,” 2012-2013
  • Recognized on the New Jersey Law Journal’s “40 Under 40” List, 2007



  • Meisels v. Fox Rothschild LLP, 240 N.J. 286 (2020)
  • Dimitrakopoulos v. Borrus, Goldin, Foley, Vignuolo, Hyman and Stahl, P.C., 237 N.J. 91 (2019)
  • Francese v. Am. Modern Ins. Grp., Inc., 383 F. Supp. 3d 336 (D.N.J. 2019)
  • Dimitrakopoulos v. Borrus, Goldin, Foley, Vignuolo, Hyman and Stahl,C., 237 N.J. 91 (2019), wherein the New Jersey Supreme Court held that the entire controversy doctrine bars a legal malpractice claim asserted by a former client who has failed to assert the claim in a previous fee collection action brought by the client’s attorney, provided the client had a fair and reasonable opportunity to assert the claim in the collection action.
  • In re Accutane Litigation, 234 N.J. 340 (2018), the seminal case on admissibility of expert scientific testimony in which the New Jersey Supreme Court adopted consideration of the federal Daubert standards, and emphasized a trial court’s proper “gatekeeping” role in seeking to disallow generally unreliable, unsound, and unaccepted expert testimony from reaching a jury.
  • Motorworld, Inc. v. Benkendorf, 228 N.J. 311 (2017), which dealt with novel issues of interpretation related to New Jersey’s Uniform Fraudulent Transfer Act.
  • Guido v. Duane Morris, LLP, 202 N.J. 79 (2010), a landmark case that involved the impact of a settlement on a legal malpractice claim. Kranz v. Tiger, 390 N.J. Super. 135 (App. Div.),  den., 192 N.J. 294 (2007)
  • Stoeckel v. Twp. of Knowlton, 387 N.J. Super. 1 (App. Div.), den., 188 N.J. 489 (2006)
  • Jerista v. Murray, 185 N.J. 175 (2005)
  • Grzanka v. Pfeifer, 301 N.J. Super. 563 (App. Div. 1997), den., 154 NJ 607 (1998)

News & Insights

News & Alerts

Speaking Engagements & Events

Articles & Publications

Associations & Organizations

Professional Affiliations

  • New Jersey State Bar Association, Member Board of Trustees
  • New Jersey Women Lawyers Association, President Elect
  • Trial Attorneys of New Jersey, Past President
  • Morris County Bar Association, Past President
  • Morris County Bar Foundation, Past President
  • American Bar Association
  • Claims and Litigation Management Alliance
  • Defense Research Institute
  • Professional Liability Underwriting Society
  • New Jersey Supreme Court Committee on Women in the Courts (2008-2010)
  • The Association of the Federal Bar of the State of New Jersey

Civic Involvement

  • Board of Trustees, CASA of Morris and Sussex Counties, Inc.
  • Board Member, Morris County Bar Foundation
  • Fellow, American Bar Foundation


  • Rutgers University School of Law – Newark, J.D., 1993
  • Rutgers College, Rutgers University, B.A., 1990


  • New Jersey
  • New York
  • U.S. District Court, District of New Jersey
  • U.S. District Court, Southern District of New York
  • U.S. Court of Appeals, Third Circuit
  • U.S. Court of Appeals, Second Circuit
  • U.S. Supreme Court
  • U.S. Bankruptcy Court, District of New Jersey
  • SL2021
  • 2020 Super Lawyers
  • 2019 Best Lawyers
  • 2019 Super Lawyers
  • 2018 Best Lawyers
  • 2018 Super Lawyers
  • 2017 Best Lawyers - Firm
  • 2017 Super Lawyers
  • NJ Supreme Court Certified Atorney
  • AV MArtindale-Hubbell
  • American Bar Foundation
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