Casey P. O’Brien

Casey P. O'Brien

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Practice Areas:

  • General Litigation
  • Criminal and Juvenile Law
  • Personal Injury
  • Real Estate
  • Business Law and Estate Planning
  • Collections
  • Oil and Gas Law


Mr. O'Brien graduated from Notre Dame Cathedral Latin High School in Munson Township, Ohio, in 1993. He received a Bachelor of Arts Degree from Walsh University in 1997, and obtained a JD Degree from Cleveland-Marshall College of Law in 2000. Mr. O' Brien joined Petersen & Ibold upon his admission to the practice of law in 2000.

Mr. O'Brien is a member of the Geauga County, Ashtabula County and Ohio State Bar Associations.

Mr. O'Brien practices in the areas of general litigation, criminal and juvenile law, personal injury, real estate, business law and estate planning.


  • Cleveland State University, Cleveland-Marshall College of Law, Cleveland, Ohio
    • J.D. - 2000
  • Notre Dame Cathedral Latin High School, Munson Township, Ohio
    • 1993
  • Walsh University
    • B.A. - 1997

Bar Admission

Published Works

Representative Cases


  • America's Top 100 Personal Injury Attorneys, 2019
  • Lawyers of Distinction, 2018
  • Ohio Super Lawyer Rising Star, 2010
  • Super Lawyer, 2010

Classes & Seminars

Pro-Bono Activities

  • Former Board Member - Big Brothers Big Sisters of Northeast Ohio
  • President of the Board of Directors - Country Neighbor Inc., Orwell, Ohio
  • Past President, Grand Valley Youth Football League
  • New Lyme Township Zoning Inspector

Representative Clients


Past Positions


Ancillary Businesses

Fraternities or Sororities

Professional Associations

  • Ohio State Bar Association, Member
  • Geauga County Bar Association
  • Ashtabula County Bar Association
  • Ohio Attorney General Collections Enforcement, Special Counsel
  • Ashtabula County Educational Service Center, Former Board Member
  • Ohio Attorney General for Collection Enforcement and Medicaid Estate Recovery, Special Counsel, 2003 to Present

Certified Legal Specialties

Current Employment Position