Jonathan S. Ziss

Jonathan S. Ziss is co-chair of the firms Management and Professional Liability practice, chair of its Aviation Litigation practice, and a member of its Commercial Litigation and Cybersecurity practices. He devotes much of his practice to the representation of professionals, including accountants, attorneys, bankers, design professionals, insurance agents/brokers, directors and officers, and fiduciaries, before administrative licensing boards and civil courts. He counsels and defends not-for-profit entities such as museums, homeowners associations, faith-based organizations, and others, in management liability litigation as well as non-litigated disputes. Jonathan counsels clients and litigates, arbitrates, and mediates commercial disputes in a wide range of industries, from healthcare to hospitality. In addition, as a member of the firms cyber incident response team, he manages compliance and loss mitigation campaigns in the aftermath of data breaches. Based on Jonathans extensive experience with the ethics of the accounting and legal professions, he is frequently hired to represent individual practitioners and firms in civil and administrative matters arising from ethics complaints. He chairs the firms Professional Guidance Committee, which addresses professional ethics across the firms more than 400 attorneys. Related Areas Management and Professional Liability Commercial Litigation and Arbitration Cybersecurity and Data Privacy Industries Aviation Architecture, Engineering, Surveying, and Design Accounting and Consulting Municipalities and Public Entities Experience Highlights Professional Liability Jonathan has represented many local, regional and national accounting firms in a wide variety of matters and in a number of forums, including all forms of ADR. In professional negligence matters, he has represented accountants in lawsuits brought by former clients; by purchasers or sellers in disputes arising out of business combinations; by factors, banks, and other lenders; by creditors in bankruptcy and bankruptcy trustees; and by other affiliated professionals. In addition, Jonathan is frequently called upon to represent accountants in investigations by federal, state, and local authorities, including the Internal Revenue Service, the FBI, and the Department of Labor, as well as investigations by bankruptcy trustees and creditors committees. He has worked with accounting firms preparing for grand jury appearances. Jonathan has also represented lawyers and law firms in professional negligence matters, including one matter involving an alleged staged motor vehicle accident ring, for which a federal grand jury had been convened. He is also hired by law firm managing partners to handle their firms business and employment-related litigation. Aviation Litigation In the field of aviation litigation, Jonathan has represented regional, national, and international air carriers, as well as under wing service providers, municipal authorities, general aviation owners and pilots, and fixed base operators, in connection with property and casualty liability litigation. He also acts as coverage counsel. In addition to handling disputed matters, he counsels commercial airlines in connection with industry-related consumer compliance and contractual matters. Jonathans transportation litigation experience also includes handling high-profile cases for the Southeastern Pennsylvania Transportation Authority (SEPTA) involving rail and bus accidents. In addition, he has handled recreational boating and trucking claims. Honors & Awards Martindale-Hubbell Peer Review Rating: AV Preeminent Martindale-Hubbell: Philadelphias Top-Rated Lawyers, 2017 Pennsylvania Super Lawyers, Professional Liability: Defense, 2012-20 View peer-review methodologies at martindale.com and superlawyers.com. No aspect of this advertisement has been approved by the Supreme Court of New Jersey.