Walter J. O'Brien

Partner
New Castle
2 Penns Way
Suite 300
New Castle, DE 19720

Walter J. O’Brien defends businesses, corporations, and insurance companies in matters throughout the State of Delaware. His wide-ranging experience includes litigating motor vehicle, premises, trucking, construction defect, toxic tort, and wrongful death cases. He has tried matters in every trial court of the State of Delaware. He has also been successful on appeal to the Delaware Supreme Court.

Walter is admitted to practice law in the State of Delaware, the United States District Court for the District of Delaware, and the Commonwealth of Pennsylvania.

He is a member of the Delaware State Bar Association where he serves as Secretary of the Torts and Insurance Section. Additionally, he was named to the 2024 list of Best Lawyers: Ones to Watch® in America, an award given to a select group of attorneys for professional excellence in private practice.

Professional & Community Involvement

  • Delaware State Bar Association, Tort and Insurance Section, Secretary
  • Randy J. Holland Workers’ Compensation American Inn of Court, Member

Cases and Experience

Reversed a six-figure summary judgment decision after appeal to the Delaware Supreme Court.

Defended a workers’ compensation claim requesting compensability for neurosurgery to alleviate a subdural hematoma by arguing a violation of the statutory notice requirement and by challenging the expert medical evidence.

Prior results cannot and do not guarantee or predict a similar outcome with respect to any future matter that we or any lawyer may be retained to handle.

News & Presentations

06.17.26 | WG Alerts & Insights | General Liability, Casualty
09.05.23 | Firm News, Press Releases | Workers’ Compensation, Insurance, General Liability, Medical Malpractice
08.17.23 | Firm News, Press Releases | Casualty, General Liability, Premises Liability, Product Liability, Trucking & Transportation, Workers’ Compensation, Insurance, Professional Liability, Medical Malpractice, Civil Rights & Municipal Liability, Employment, Family Law
06.14.22 | WG Alerts & Insights | Workers’ Compensation
03.31.22 | Webinars & Events | Workers’ Compensation
Delaware Workers’ Compensation: A Deeper Look

Assistant

Education

  • University of Richmond, B.A., 2008
  • Delaware Law School, J.D., 2012

Practices

Admissions

  • Pennsylvania
  • Delaware
  • United States District Court for the District of Delaware

Industries

Awards & Recognition

  • Best Lawyers: Ones to Watch® in America, 2024

Speaking Engagements

  • 03.31.22 Delaware Workers’ Compensation: A Deeper Look
  • 01.27.22 Delaware Workers’ Compensation 101