Justin Lennon Leinenweber joined Leinenweber Baroni & Daffada LLC in 2013 and concentrates his practice in employment, civil rights, and general litigation. 

Prior to joining the firm, Mr. Leinenweber served as an Assistant Attorney General with the Illinois Attorney General’s Office where he defended the State, its agencies and employees in discrimination and retaliation cases.  Mr. Leinenweber has extensive experience handling all aspects of litigation, and recently tried a race retaliation and Family and Medical Leave Act case in front of a federal jury; the jury returned a verdict in favor of his clients, exonerating them of any wrongdoing.

Before joining the Attorney General’s Office, Mr. Leinenweber spent nearly five years as an associate with Winston & Strawn where he was a member of the firm’s litigation practice group.  While with Winston, Mr. Leinenweber participated in a variety of cases including patent infringement, False Claims Act, securities fraud, mortgage lending, and pharmaceutical cases.

Past litigation highlights include:

Member of trial team that successfully defended a state university and its employees who were accused of retaliating against another employee because of his race and because he took a leave of absence under the Family and Medical Leave Act.

Successfully obtained summary judgment on behalf of state agencies and employees, who had been accused of race discrimination and retaliation, as well as First Amendment retaliation. 

Conducted an internal investigation on behalf of the chief judge of an Illinois judicial circuit.  Presented the results of that investigation to a former employee’s attorney and successfully persuaded them not to file a lawsuit against the office of chief judge.

In 2012, the Illinois Supreme Court appointed Mr. Leinenweber to serve on an Illinois Attorney Registration and Disciplinary Commission Hearing Board, where he presides over disciplinary, disability, and reinstatement cases brought against attorneys licensed to practice in Illinois. 

Mr. Leinenweber’s peers recently elected him to the Illinois State Bar Association Assembly which is the supreme policy making body of the Association.  He also serves on the ISBA’s Government Lawyers and Attorney Registration and Disciplinary Commission Committees. 

Mr. Leinenweber received his law degree from the University of Illinois College of Law, where he graduated magna cum laude.  While at Illinois, Mr. Leinenweber studied abroad at Katholieke Universiteit Leuven, Belgium, where he studied European and international law.  Mr. Leinenweber received a Bachelor of Arts in History from the University of Notre Dame, where he graduated cum laude and was a member of the National History Honor Society of Phi Alpha Theta.