Matthew Marrone is a partner in Goldberg Segalla’s Philadelphia and Princeton offices, where he is one of the leaders of the firm’s professional liability practices focused on lawyers and insurance agents and brokers. He has represented clients in many forms of complex litigation, some with exposures in excess of $10 million. He has tried numerous cases to verdict and argued before various courts of appeal, including the Third Circuit U.S. Court of Appeals. Matt primarily defends lawyers, insurance agents, and other professionals against claims alleging malpractice or other wrongful acts, and often represents these same professionals in ethics investigations and disciplinary proceedings. Matt has defended hundreds of lawyers and has gone to trial in many cases, and often to verdict. Some matters he has defended were exposures in excess of $30 million. He has secured defense verdicts at trial and dismissals at summary judgment, and he has achieved countless favorable settlements for lawyers across all kinds of practice areas. His experience also includes matters involving non-profit directors’ and officers’ liability, governmental liability, civil rights and employment issues, product liability, trademark/copyright infringement, the Fair Debt Collection Practices Act, as well as death/catastrophic injury litigation. He also frequently counsels and represents insurers in coverage disputes.

Matt gained national recognition as Chair (2009–11) of the Professional Liability Committee of the Defense Research Institute (DRI), the largest organization of defense attorneys in the country, with membership in excess of 22,000. He is a frequent author and lecturer for regional and national audiences on topics in his areas of concentration. This activity includes writing the quarterly “Avoiding E&O” column for Property Casualty 360.

He encourages his clients to view him as a trusted resource for their businesses, practices, or legal decision-making.  By zealously advocating for his clients, providing them with relevant education, and recognizing the overall importance of cost efficiency in legal representation, Matt strives to ensure his clients receive excellent value from the services he provides.

  • Pennsylvania Super Lawyers, Professional Liability: Defense, 2015–18
  • Pennsylvania Super Lawyers, Rising Stars, 2013
  • View peer-review methodologies at No aspect of this advertisement has been approved by the Supreme Court of New Jersey. 
Professional Affiliations
  • Defense Research Institute, Professional Liability Steering Committee, Immediate Past Chair
  • Professional Liability Underwriting Society (PLUS)
  • International Association of Defense Counsel 
  • Agents of America, Advisory Board
  • ABA Lawyers Professional Liability Consortium
Community Involvement
  • Coach, Boys Baseball (7–9 year-olds), Fairmount Sports Association
 Admitted to Practice
  • Pennsylvania
  • New Jersey
  • U.S. District Court for the Eastern District of Pennsylvania
  • U.S. District Court for the District of New Jersey
  • U.S. Court of Appeals for the Third Circuit
  • Villanova Law School, J.D., 1998
  • University of Richmond, B.S., cum laude, 1995
  • “Fanning the Flames: Have Conflicts of Interest Driven Up Claim Severity?” (Moderator), American Bar Association National Legal Malpractice Conference, Miami, FL, April 3-5, 2019
  • Presenter, "Relationship Counseling: How Different Levels of the Insurance Chain Impact E&O Claims," 10th Annual Errors & Omissions Insurance ExecuSummit, Uncasville, CT, June 7, 2016
  • AuthorWhere Does Client Dissatisfaction Become an E&O Claim? Property Casualty 360, November 12, 2015
  • Panelist, "Professional Liability Roundtable," IADC, New York, NY, May 28, 2015
  • Author, “Avoiding E&O: When an Insurer Goes Broke, Can Policyholders Blame the Broker?Property Casualty 360, March 4, 2015
  • Quoted in “Foley Atty in High Court Row May Have Broken Ethics Rules,” Law360, February 23, 2015
  • Author, “Caught in a Bind,”National Underwriter Property & Casualty, August 2014
  • Co-Author, “Reduce E&O With EPL,”National Underwriter Property & Casualty, June 2014
  • Author, “The Importance of How You Promote Your Agency: Social Media,” chapter in Insurance Agency Risk Management: A Comprehensive Guide to Avoiding E&O Claims, Book Two, Agents of America / Thomson Reuters, May 2014
  • Author, “Consumer Protection Laws: Liability and Coverage Implications for Licensed Professionals and Their Insurers,” IADC Professional Liability Newsletter, February 2014
  • Presenter, “Ethical Boundaries of Discovery in Social Media” and “Proper Social Media Conduct/Social Media Policies,” NBI Seminar: Ethics and Social Media — What Attorneys Need to Know, Cherry Hill, NJ, December 19, 2013
  • Co-Author, “Moving Target: State Law Variances Require Agents to Be Diligent With Referral Fees,”American Agent & Broker, August 2013
  • Presenter, “Professional Liability Claims Involving Criminal Charges,” E&O Insurance ExecuSummit, Mohegan Sun Resort, Connecticut, June 18–19
  • Author, “Little FTC Acts: Case Study Analysis of State Consumer Protection Laws,”American Agent & Broker, May 2013
  • Co-Author, “Fortify Loss Control: N.Y. Ruling Makes It Easier for Insureds to Sue Agents,”American Agent & Broker, February 2013
  • Co-Author, “Insurer Insolvency,” chapter in Insurance Agency Risk Management: A Comprehensive Guide to Avoiding E&O Claims, Book One, Agents of America / Thomson Reuters, 2012
  • Author, Pennsylvania Chapter for DRI’s Professional Liability Insurance: A Compendium of State Law, 2012
  • Presenter, “Legal Ethics for Everyday Practice,” NBI Seminar, December 2012
  • Panelist, “Malpractice Prevention and Ethical Compliance,” Minnesota Lawyers Mutual CLE Seminar, November 27, 2012
  • Co-Author, “Social Missteps: Web 2.0 raises risks for defamation, libel, copyright and security breaches,” American Agent & Broker (Avoiding Errors and Omissions Column), November 2012
  • Author, “Personal Umbrella Undersold?”American Agent & Broker, (Avoiding Errors and Omissions Column), August 2012
  • Author, “Clear Compensation: A Lesson in Transparency From NY’s Disclosure of Broker Compensation Rule,” American Agent & Broker (Avoiding Errors and Omissions Column), May 2012
  • Panelist, "Real Estate Closing Attorney Malpractice Claims," Legal Malpractice Update Seminar, New Jersey Institute for Continuing Legal Education, March 31, 2012
  • Co-Author, “Record Retention: When Litigation is Pending or Foreseeable, Create a Litigation Hold Memorandum,” American Agent & Broker (Avoiding Errors and Omissions Column), February 2012