About Cosmo J.
Cosmo J. Tedone is an Illinois-based lawyer who has spent decades practicing in and around Will County. He works out of offices in Joliet and Plainfield and maintains admissions in both state and federal courts. Colleagues and clients see him regularly in local courtrooms.
Tedone completed his undergraduate degree at Rochester Institute of Technology in 1990. He went on to attend Western Michigan University Cooley Law School, where he pursued litigation studies and earned his J.D. in 1999. During and after law school he built practical experience that fed into a courtroom-oriented practice.
Early in his career he served as a senior associate at Chuck Bretz & Associates, P.C., a role he held in 2004. That position involved trial preparation and courtroom work. He later became owner of the Law Offices of Tedone & Morton, P.C., where he continues to practice. The firm maintains a local presence through offices in Joliet and Plainfield.
Tedone holds a Certificate of Merit in Torts and Family Law. He is a member of several professional organizations, including the American Association of Premier DUI Lawyers, the Will County Black Bar Association (since 2011), the Illinois Trial Lawyers Association (since 2007), and the Will County Bar Association (since 2004). Those memberships reflect an active engagement with peers in both criminal and civil practice areas.
He is admitted to the Illinois bar, to practice before the U.S. District Court for the Northern District of Illinois, and to the Connecticut bar. Those admissions allow him to take cases in state courts and, where appropriate, in federal court. He has represented clients in a range of matters that require courtroom advocacy and procedural familiarity across jurisdictions.
People who work with Tedone describe a lawyer who spends a lot of time in court preparing evidence, arguing motions, and presenting cases to judges and juries. His background in litigation and his certificate in torts and family law inform how he approaches both criminal and civil matters. He keeps an office-based practice while appearing in courts across the region.
As of 2026 he continues to manage the Law Offices of Tedone & Morton, P.C., handling matters that include DUI defense, tort and family-law issues, and representation in state and federal courts.
