David Klingsberg is a trial and appellate lawyer with particular experience in mass litigation. He has been national coordinating counsel and trial and appellate counsel in multi-district product liability and antitrust litigations. His experience includes: (1) defending multi-district product liability litigations involving individual and class suits concerning pharmaceutical and chemical products and medical devices (2) representing plaintiffs in a trial involving the Three Mile Island nuclear accident; (3) defending multi-district antitrust litigation involving individual and class suits by retail pharmacies against pharmaceutical manufacturers; (4) representing plaintiffs in multi-district antitrust and patent litigation. He has briefed and argued cases before the Judicial Panel for Multi-district Litigation and before numerous state and federal courts including mass litigation related issues such as exclusion of expert testimony, class action certification and punitive damages.
David chaired Kaye Scholer's Executive Committee for an eight year term (1997-2004). Before joining Kaye Scholer, he was Chief Appellate Attorney and an Assistant United States Attorney in the Southern District of New York, an attorney with the United States Department of Justice, and law clerk to a federal judge. He is a Fellow of the American College of Trial Lawyers. He served as Chair of the Antitrust and Trade Regulation Committee of the Association of the Bar of the City of New York (1986-1989).
David was recently recognized in the Litigation and Product Liability Lawyers (2014) Expert Guide by Legal Media Group. He was also selected for inclusion in the 2015 edition of The Best Lawyers in America, which has continually recognized him for more than twenty years, in the practice areas of Antitrust Law, Bet-the-Company Litigation, Commercial Litigation and Product Liability Litigation ‑ Defendants. Additionally, he has been selected as a “Top Lawyer” by Litigation 2011 ‑ A Supplement To The American Lawyer & Corporate Counsel.
David has been a Visiting Lecturer at Rutgers School of Law from 2005 to 2010, where he taught Complex Civil Litigation. As of 2013, David serves as an Adjunct Professor of Law at the University Miami School of Law.
David served on the Board of Advisors and was a Director of the Legal Aid Society. In 2008, he was the recipient of the Society's 2008 Pro Bono Award for outstanding service to the Society and its clients ;for preparing an amicus brief resulting in a landmark decision prohibiting the administrative imposition of Post Release Supervision. He also was presented with the Society’s Award for Outstanding Pro Bono Service in 2005, and with its Public Interest Leadership Award in 2001. On April 27, 1998, in recognition of two death penalty cases he argued in the U.S. Supreme Court,. he was a recipient of the Association of the Bar of the City of New York’s Thurgood Marshall Award for contribution to the representation of human beings who are under a sentence of death.