Dennis A. Marks

Dennis A. Marks

Of Counsel

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P: 312.540.7526
F: 312.540.0578
120 North LaSalle Suite 2600
Chicago, Illinois 60602

Dennis Marks has 34 years of trial experience in a wide variety of cases for insurance and corporate clients. This experience includes: defense of lawyer professional liability, personal injury claims, contract matters, shareholder derivative suits, RICO, admiralty claims, partnership dissolutions, specific performance, mandamus actions, will contests, trust disputes, commercial paper, bank suits, investigation and litigation involving financial institution and fidelity bond claims, construction litigation, and directors and officers liability. He is distinguished as AV® Preeminent™ Peer Review Rated by Martindale-Hubbell.

Mr. Marks has lectured for the Chicago Bar Association, the Illinois Institute of Continuing Legal Education, and the Illinois Association of Defense Trial Council.

Mr. Marks is a Director of the Boothroyd Foundation, a privately funded foundation dedicated to support local charities, educational institutions, and civic organizations.



Loyola University of Chicago, BBA, 1969

The John Marshall Law School, JD, 1974


Practice Areas


Commercial Litigation

Practice Areas





Bar and Court Admissions

Illinois, 1974

US District Court for the Northern District of Illinois, including Federal Trial Bar

US District Court for the Southern District of Indiana


Community Involvement


Dennis A. Marks has recently been appointed as Chairman of the Legal Advisory Subcommittee of Catholic Charities' Board of Advisors. He was a member of both Cardinal Bernadin's and Cardinal George's Archdiocesan Council for the Archdiocese of Chicago from 1995 to 2002. In 2001 and 2002, he served as Chairman of this Council. He continuously served as Co-chair of "Leadership Day" for the Archdiocese of Chicago from 1999 to 2010. Mr. Marks has been guest principal of Chicago's Patrick Henry School in the Chicago Board of Education "Principal for a Day" program each year from 1998 to 2005.

He is also a Director of the Boothroyd Foundation, a privately funded foundation dedicated to support local charities, educational institutions, and civic organizations.

Mr. Marks currently volunteers pro bono legal services to indigent individuals on a weekly basis at Catholic Charities Legal Assistance Office in Chicago.


Representative Matters


Fakhouri v. Taylor, et al.,  618 N.E.2d 518, 248 Ill.App.3d 328, 187 Ill.Dec. 927, Nos. 1-91-3641, 1-92-1416. Appellate Court of Illinois, First District, First Division.  Wrongful death action brought against pharmacists who filled prescriptions on which customer allegedly overdosed.  The Circuit Court of Cook County granted pharmacists' motions to dismiss, and appeal was taken.  The Appellate Court held that pharmacists did not have duty to warn customer of prescribed dosages of medication allegedly in excess of manufacturer's recommended limits where pharmacists did nothing more than fill prescriptions as ordered by physician.


Illinois State Bar Association

Chicago Bar Association

Boothroyd Foundation

Professional Liability Underwriting Society

American Bar Association Standing Committee on Lawyers' Professional Liability

Community Involvement