Michael J. "Mike" O'Callaghan

Steve focuses his practice in the areas of business and complex litigation, construction law, patent and trademark litigation, employment litigation, probate litigation, dispute resolution and appeals. He has 43 years of experience in more than 60 trials (both jury and non-jury). Among his accomplishments, Steve was listed in the 2004-21 editions of "Ohio Super Lawyers" by Law & Politics magazine; in 2009 and 2017, Steve earned the distinction of being listed one of the Top 100 Super Lawy...

J. Thomas “Tom” Nocar is the founder of Nocar Construction Law, LLC, a construction-focused law firm serving contractors, developers, and design professionals across Ohio. Before becoming a construction lawyer, Tom spent 26 years managing construction projects. This experience provides him with a unique set of skills to offer his clients—broad technical knowledge of the commercial construction industry and a practical approach to dispute avoidance and resolution. Tom regular...

David B. Barnhart is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Claimants. David B., who practices law in Columbus, Ohio, has been recognized since 1995. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David B. is held by other top lawyers in the same geographic and legal practice area.

Arianna Atkins is an Ohio family law attorney representing clients in Columbus and throughout Central and Northeast Ohio. With more than fifteen years of experience in domestic relations law, she concentrates her practice on high-asset divorce, complex property division, and contested custody matters involving business owners, executives, physicians, and other high-income professionals. Ms. Atkins regularly handles sophisticated financial issues arising in divorce proceedings, including close...

Joseph R. Durham is a member of Eastman & Smith and has represented cities, counties, local health districts, solid waste management districts, townships and villages in environmental law and litigation and public health law. Mr. Durham has represented clients before the Ohio Department of Health, Ohio Environmental Protection Agency, Environmental Review Appeals Commission, Ohio Department of Commerce, Ohio Board of Pharmacy, Ohio Real Estate Commission, county boards of revision (real e...

In October 2015, Grier joined the ATWF team, bringing with him many years of experience in all areas of medical litigation, including cardiovascular, neurologic, neursurgical, radiology, oncology, obstetric-gynecologic and hospital administration issues. Grier’s litigation immersion began with his employment as a staff attorney at the Franklin County Court of Common Pleas in Columbus. His next position with Earl Warburton & Adams lasted over 25 years. Starting as an associate and wo...

Jerry has been successfully trying cases since he received his law licence. His career with the Franklin County Prosecutor’s Office in 1974 as an Assistant Prosecutor, where he tried over 75 cases in a three-year period. In less than two years, he was lead counsel in a death penalty case and obtained a conviction under Ohio's new death penalty statute. He entered private practice in 1977 after taking courses in gross anatomy and clinical pathology at The Ohio State University School of ...

Matthew R. Wilson is a top attorney recognized by Best Lawyers in the practice area(s) of Mass Tort Litigation / Class Actions - Plaintiffs. Matthew R., who practices law in Columbus, Ohio, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthew R. is held by other top lawyers in the same geographic and legal practice area.

Courtney Hanna is a top attorney recognized by Best Lawyers in the practice area(s) of Collaborative Law: Family Law and Litigation - Real Estate. Courtney, who practices law in Columbus, Ohio, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Courtney is held by other top lawyers in the same geographic and legal practice area.

Christopher L. Miller is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Regulatory Law. Christopher L., who practices law in Columbus, Ohio, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Christopher L. is held by other top lawyers in the same geographic and legal practice area.