People

Catherine O'Neil focuses on civil and criminal regulatory enforcement, parallel civil litigation, internal corporate investigations and compliance counseling. As a partner in our Special Matters and Investigations practice, Catherine represents companies and individuals in state and federal courts and before various government agencies and administrative bodies. She is also an accomplished trial lawyer and handles a variety of complex commercial litigation matters.

As an experienced litigator, Catherine represents clients in civil, criminal and regulatory matters, and counsels clients in connection with internal investigations and regulatory compliance. She represents clients before governmental agencies, including the Department of Justice, the Drug Enforcement Administration, and the Department of Health and Human Services, as well as various U.S. Attorneys' Offices and state attorneys general. She also has extensive experience in complex commercial litigation.

Before joining our firm, Catherine served as an Associate Deputy Attorney General in the DOJ, working on matters involving domestic and international drug enforcement, drug policy, anti-money-laundering strategy, and asset forfeiture. She played a key role in developing and implementing DOJ’s domestic drug enforcement strategy, and also served as the national director of the Organized Crime Drug Enforcement Task Force Program.

Before that, Catherine was an Assistant U.S. Attorney for the Northern District of Georgia, where she tried a number of significant cases. She also handled complex grand jury investigations, litigated hundreds of evidentiary hearings and successfully argued cases before the Court of Appeals.

Catherine has been ranked by Chambers and was named one of Georgia’s Super Lawyers for 2009–2016. In addition, she has been recognized nationally as one of the top business litigators in Super Lawyers: Business Edition, and identified as one of the Top 50 Women Lawyers in Georgia by Super Lawyers.

During her DOJ tenure, Catherine was honored with the Attorney General’s Award for Excellence in Management, and with a Director’s Award for Superior Performance as an Assistant U.S. Attorney.

Full Bio

Credentials

B.A., University of Virginia, with highest distinction

J.D., Harvard University, cum laude

M.P.P., Harvard University

U.S. Court of Appeals for the Third Circuit

U.S. Court of Appeals for the Seventh Circuit

U.S. Court of Appeals for the Ninth Circuit

U.S. Court of Appeals for the Eleventh Circuit

U.S. Court of Appeals for the D.C. Circuit

U.S. District Court for the District of Massachusetts

U.S. District Court for the Southern District of Illinois

U.S. District Court for the Northern District of Georgia

U.S. District Court for the District of Columbia

District of Columbia

Georgia

Massachusetts

Law Clerk, Edward F. Harrington, U.S. District Court for the District of Massachusetts

American Bar Association, Atlanta Bar Association, Georgia Association of Women Lawyers

Lamar Inn of Court

Super Lawyer: Georgia


Super Lawyers, 2009–2016

Top Business Litigators Nationwide


Super Lawyers: Business Edition

Top 50 Women Lawyers in Georgia


Super Lawyers

2013 BTI Client Service All-Star

Atlanta Bar's Leadership Award

Charles Watkins Award for Sustained and Distinguished Service to the Bar

06.15.2016

Matters

Served as lead trial counsel for Delta Air Lines and successfully litigated a complex commercial dispute involving one of Delta's regional carriers.

Served as trial counsel for Avondale Mills in a suit seeking damages arising out of a train derailment and chemical spill that destroyed the Avondale plant. The client obtained a favorable settlement prior to verdict.

Represented a Fortune 100 company in a multi-district criminal investigation involving allegations of the unlawful distribution of pseudoephedrine, and successfully negotiated a non-prosecution agreement and civil settlement.

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Matters

Served as lead trial counsel for Delta Air Lines and successfully litigated a complex commercial dispute involving one of Delta's regional carriers.

Served as trial counsel for Avondale Mills in a suit seeking damages arising out of a train derailment and chemical spill that destroyed the Avondale plant. The client obtained a favorable settlement prior to verdict.

Represented a Fortune 100 company in a multi-district criminal investigation involving allegations of the unlawful distribution of pseudoephedrine, and successfully negotiated a non-prosecution agreement and civil settlement.

Represented a Fortune 100 company in an administrative proceeding before the DEA and obtained a temporary restraining order against the DEA.

Matters

Served as lead trial counsel for Delta Air Lines and successfully litigated a complex commercial dispute involving one of Delta's regional carriers.

Served as trial counsel for Avondale Mills in a suit seeking damages arising out of a train derailment and chemical spill that destroyed the Avondale plant. The client obtained a favorable settlement prior to verdict.

Represented a Fortune 100 company in a multi-district criminal investigation involving allegations of the unlawful distribution of pseudoephedrine, and successfully negotiated a non-prosecution agreement and civil settlement.

See more
Icon close

Close

Matters

Served as lead trial counsel for Delta Air Lines and successfully litigated a complex commercial dispute involving one of Delta's regional carriers.

Served as trial counsel for Avondale Mills in a suit seeking damages arising out of a train derailment and chemical spill that destroyed the Avondale plant. The client obtained a favorable settlement prior to verdict.

Represented a Fortune 100 company in a multi-district criminal investigation involving allegations of the unlawful distribution of pseudoephedrine, and successfully negotiated a non-prosecution agreement and civil settlement.

Represented a Fortune 100 company in an administrative proceeding before the DEA and obtained a temporary restraining order against the DEA.

Credentials

B.A., University of Virginia, with highest distinction

J.D., Harvard University, cum laude

M.P.P., Harvard University

U.S. Court of Appeals for the Third Circuit

U.S. Court of Appeals for the Seventh Circuit

U.S. Court of Appeals for the Ninth Circuit

U.S. Court of Appeals for the Eleventh Circuit

U.S. Court of Appeals for the D.C. Circuit

U.S. District Court for the District of Massachusetts

U.S. District Court for the Southern District of Illinois

U.S. District Court for the Northern District of Georgia

U.S. District Court for the District of Columbia

District of Columbia

Georgia

Massachusetts

Law Clerk, Edward F. Harrington, U.S. District Court for the District of Massachusetts

American Bar Association, Atlanta Bar Association, Georgia Association of Women Lawyers

Lamar Inn of Court

Super Lawyer: Georgia


Super Lawyers, 2009–2016

Top Business Litigators Nationwide


Super Lawyers: Business Edition

Top 50 Women Lawyers in Georgia


Super Lawyers

2013 BTI Client Service All-Star

Atlanta Bar's Leadership Award

Charles Watkins Award for Sustained and Distinguished Service to the Bar

06.15.2016