Leonid Feller is a lecturer at Michigan Law and a litigation partner in the Chicago office of Quinn Emanuel Urquhart & Sullivan LLP, where he concentrates his practice in all areas of complex litigation, white collar criminal defense, and appellate litigation.

Before joining Quinn Emanuel, Feller was a partner at Kirkland & Ellis LLP from 2011 to 2019. From 2006 to 2011, he served as an assistant US attorney in Detroit. While there, he prosecuted a broad range of white-collar, violent organized crime, national security, and child exploitation offenses.

Feller has served as a lecturer at the Law School since 2009. He also has taught at Wayne State University Law School and has been selected by the Department of Justice as an instructor at its National Advocacy Center in Columbia, South Carolina.