Our Chicago Lawyers Aggressively Advocate For Our Clients

And Seek Justice For Their Injuries

Michael Kosner and Jay Paul Deratany
Michael Kosner

Practice Areas

  • Medical Malpractice
  • Birth Injury
  • Nursing Home Negligence
  • Car Accidents
  • Truck Accidents
  • Personal Injury
  • Wrongful Death


Michael Kosner has been practicing law in Chicago since 1998. After graduating from the University of Miami, he practiced in southern Florida before returning to Chicago, where he was raised in the northern suburbs. In 2018, he became a partner at Deratany & Kosner.

Legal Career

In 2005, at the age of 35, Mr. Kosner effectuated one of the largest stillbirth settlements in Illinois history. The case was settled in fewer than 90 days from the time he started working on it.

In 2009, Mr. Kosner settled the second largest wrongful death/medical malpractice case ever against Cook County Hospital. The settlement of $9.8 million was achieved just over two years after the filing of the lawsuit. The average medical malpractice case in Cook County takes more than three years to resolve.

Personal Life

Mr. Kosner is a devoted family man. He lives in Chicago with his wife and two children.


  • University of Miami School Law, Miami, Florida
    • Juris Doctor
  • University of Kansas, Lawrence, KN
    • Honors: cum laude
    • Major: Psychology

Bar Admissions

  • Illinois, 1998
  • Florida, 1998

Professional Associations

  • Illinois Bar Association
  • Florida Bar Association
  • Illinois Trial Lawyers Association

Representative Cases

  • Hudson v. LSSC
  • Ricks v. South Suburban Hospital
  • Willis v. Mt. Sinai


  • Illinois Super Lawyers, 2017 - 2019