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. At Miami Law he teaches Complex Litigation.