Peter S. Coorlas is a senior associate of the Chicago law firm Peck Ritchey, LLC. Peter was an Assistant State’s Attorney for Cook County for 30 years, serving in the Special Litigation and Municipal Litigation Sections of the Civil Actions Bureau. Although Peter served in various areas while at the State’s Attorneys Office, he has primarily represented the interests of Cook County in probate matters, spending much of his time on contested litigation, including will contests, contested heirships, presumptions of death and estate claims. Peter has argued cases in front of the Appellate and Supreme Court of Illinois, and tried numerous jury trials to verdict.  Peter is named by Leading Lawyers Magazine as a Leading Lawyer in Elder Law and Trust, Will & Estate Planning Law.

  • Advises individuals and banks charged with the administration of estates and trusts. Guides fiduciaries through the probate process, appearing in court as required, assisting with the transfer of assets, and resolution of claims, as well as the implementation of the decedent’s estate plans.
  • Vigorously represents all parties in will contests and contested guardianships, including minors and disabled adults.


May 30, 2013: “A Mind is a Valuable Thing to Waste”, Holy Family, Des Plaines, IL

April 22, 2013: “Ethical Issues with End of Life Decision Making”, Skokie Hosptial, Skokie, IL

September 5, 2012: “Guardianship”, Greek American Rehab Center, Wheeling, IL

October 21, 2011: “Powers of Attorney”, Marianjoy Hospital and Rehab, Wheaton, IL

May 17, 2011: . “Dementia – Could This be You or Someone You Know”, The Abington of Glenview, Glenview, IL

May 12, 2011: “Dementia – Could This be You or Someone You Know”, Evanston Public Library, Evanston, IL

May 10, 2011: “Dementia – Could This be You or Someone You Know”, Edgebrook Chicago Public Library, Chicago, IL

May 9, 2011: “Dementia – Could This be You or Someone You Know”, River Forest Public Library, River Forest, IL

Practice Areas

  • Estate and Guardianship Litigation
  • Will Contests
  • Probate and Trust Litigation
  • Probate Administration
  • Elder Law


  • awards
  • awards
  • awards
  • Recognized by Best Lawyers 2023


  • University of Iowa, B.B.A., Accounting
  • DePaul University, College of Law, J.D.

Bar Admission

  • Illinois
  • United States Federal District Court
  • United States Supreme Court

Professional Associations

  • Chicago Bar Association
    • Probate Practice Committee
  • Illinois State Bar Association
  • Hellenic Bar Association of Illinois
    • Past President
  • Northwestern College
    • Board of Directors