Leonid Feller is a partner in Quinn Emanuelâ€™s Chicago office. A former federal prosecutor, Lenny concentrates his practice in the areas of white collar criminal defense and government investigations, defending corporations and individuals in federal and state criminal, civil, and regulatory proceedings, including in connection with allegations of antitrust violations, securities fraud, health care fraud, public corruption, and environmental crimes. Lenny also has broad trial and appellate experience in all aspects of complex commercial litigation, including multidistrict litigation, consumer class actions, mass tort and product liability litigation, False Claims Act suits, and contract disputes in federal and state courts throughout the United States.
Lenny is also a lecturer at the University of Michigan Law School, where he has taught courses on federal criminal prosecution, investigation and defense. He is the co-author of Criminal Pretrial Advocacy 3d Ed. (West 2019) and numerous other scholarly works.