Daniel E. Rosenfeld

Dan Rosenfeld concentrates his practice on complex commercial disputes.

Dan has extensive experience in a variety of areas including product liability and mass torts, antitrust and unfair competition, securities and derivative suits, insurance coverage, employment and labor law disputes, intellectual property and bankruptcy.

Prominent technology companies, pharmaceutical and biotechnology companies, financial services institutions, private equity and venture capital companies, and other business concerns have been among his clients.

Dan has extensive experience trying cases in a variety of federal and state courts and has served as lead trial counsel in federal courts in Connecticut, Delaware, Illinois, Massachusetts, Pennsylvania and New York, and in state courts in Massachusetts, New York and Rhode Island. He has litigated appeals in the Massachusetts Appeals Court and the United States Courts of Appeals for the First, Third and Seventh Circuits.

Dan's product liability experience has included defense of personal injury/wrongful death claims involving various products, including industrial machinery and equipment, medical devices and consumer products, and he has regularly counseled clients on product liability, warranty, consumer fraud and recall matters. With respect to toxic tort and mass torts, he has acted as national counsel in multidistrict litigation. His toxic tort experience has involved the representation of defendants in environmental, asbestos, silica and lead pigment matters. He has served as national coordinating counsel for a petroleum company in multi-district mass tort litigation. His antitrust, unfair competition and class action defense work has included the representation of public companies, directors and officers in numerous class action contexts in federal and state courts, including the coordination of multi-jurisdictional litigation and internal investigations.

Dan has litigated numerous labor and employment issues in state and federal courts and at the Equal Employment Opportunity Commission and the Massachusetts Commission Against Discrimination. He has been extensively involved in arbitrations, mediations and internal investigations. His intellectual property experience includes successful trials in patent, copyright, trademark litigation and misappropriation of trade secret cases.

Dan has been the Pro Bono Coordinator for DLA Piper's Boston Office since 2008.

Good to know

Areas of Practice 1) Litigation and 2) Arbitration and Investigations
Law School J.D., Brooklyn Law School, 1990
Education B.A., Tufts University, 1987
Bar Member / Association Massachusetts State Bar Association, New York State Bar Association
Most recent firm DLA Piper
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