Brief Bio
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. Peter is also recognized in The Best Lawyers in America® 2026 for work in Trusts and Estates.
Peter also 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.
Educational Background
- Juris Doctor (J.D.): DePaul University College of Law, 1974
- Bachelor of Business Administration (B.B.A.): University of Iowa College of Business, 1971
Professional Associations
- Chicago Bar Association: Probate Practice Committee
- Illinois State Bar Association
- Hellenic Bar Association of Illinois: Past President – 1992-1993
Courts Admitted
- Illinois State Courts
- U.S. Federal Courts
- United States Supreme Court
- Illinois Appellate Court
Awards
- Recognized in The Best Lawyers in America® 2026 for work in:
- Trusts and Estates
- Superb (9.0) Avvo® Rating
- Rated AV Preeminent® by Martindale-Hubbell®
- Selected as a Leading Lawyer in Elder Law and Trust, Will & Estate Planning Law (Leading Lawyers Network, 2025)
Practice Areas Focus
- Estate and Guardianship Litigation
- Will Contests
- Probate and Trust Litigation
- Probate Administration
- Elder Law
Case Victories
- Appellate and Supreme Court of Illinois: Successfully argued cases
- Numerous Jury Trials: Tried to verdict in probate and estate matters
News
- Peck Ritchey, LLC Awarded Tier 1 Chicago Rankings in Elder Law and Trusts and Estates by Best Law Firms®
- 4 Peck Ritchey, LLC Lawyers Named to 2026 Best Lawyers in America List
- Peck Ritchey, LLC Attorneys Named Leading Lawyers and Emerging Lawyers (2025)
- Peck Ritchey, LLC Ranked in 2023 “Best Law Firms”
- Peck Ritchey, LLC Ranked in 2022 “Best Law Firms”
- Peck Ritchey, LLC has a new Chicago home!
- Estate Planning in the COVID-19 Era
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
Recognitions
Education
- 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











