He was a judge of the Criminal Division of the Circuit Court of Cook County, Illinois from 1976 to 1985.
He was a judge of the Chancery Division of the Circuit Court of Cook County, Illinois from 1985 to 1988.
[3] Marovich was nominated by President Ronald Reagan on February 2, 1988, to a seat on the United States District Court for the Northern District of Illinois vacated by Judge Susan Christine O'Meara Getzendanner.
He was confirmed by the United States Senate on March 31, 1988, and received his commission on April 1, 1988.
in inactive senior status, which means that he no longer hears cases or participates in the business of the court.