Mr. O'Brien is an accomplished attorney assisting clients in all phases of civil and criminal tax controversy disputes. His extensive experience ranges from examinations and appeals before the IRS to tax controversy litigation before the U.S. Tax Court as well as the U.S. District Courts and Bankruptcy Courts.
His comprehensive knowledge extends from his tenure as both a senior attorney with the IRS Office of Chief Counsel and as a trial attorney with the U.S. Department of Justice, Tax Division. During his time with the government, Mr. O’Brien advised IRS revenue agents on complex corporate, partnership, and international tax matters during the audits of multinational businesses and high net-worth individuals. Mr. O’Brien also assisted in writing audit technique guides for the oil and gas industry and participated in a large nationwide special trial team litigating high-dollar cases before the U.S. Tax Court.
Mr. O’Brien was admitted to practice in California in April 2019 and is currently seeking admission in Texas.
His comprehensive knowledge extends from his tenure as both a senior attorney with the IRS Office of Chief Counsel and as a trial attorney with the U.S. Department of Justice, Tax Division. During his time with the government, Mr. O’Brien advised IRS revenue agents on complex corporate, partnership, and international tax matters during the audits of multinational businesses and high net-worth individuals. Mr. O’Brien also assisted in writing audit technique guides for the oil and gas industry and participated in a large nationwide special trial team litigating high-dollar cases before the U.S. Tax Court.
Mr. O’Brien was admitted to practice in California in April 2019 and is currently seeking admission in Texas.
- University of California, Irvine School of Law, J.D., 2018
- President, Tax Law Society
- Director of Finance, Student Bar Association
- Phillip C. Jessup International Moot Court Competition
- Pacific Regionals, Runner-Up
- Dean’s Merit Scholar
- University of California, Irvine, B.A., Political Science, cum laude, 2015
- Dallas Bar Association
- Collin County Bar Association
- American Bar Association
- Section of Taxation
- California, 2019
- Texas, Admission Pending
- United States Tax Court, 2019
- United States District Court for the Northern District of Texas, 2022
- United States District Court for the Southern District of Texas, 2022
- United States District Court for the Eastern District of Texas, 2022
- United States District Court for the Western District of Texas, 2022
- United States District Court for the District of New Mexico, 2022
- United States Bankruptcy Court for the Northern District of Texas, 2022
- United States Bankruptcy Court for the Southern District of Texas, 2022
- United States Bankruptcy Court for the Eastern District of Texas, 2022
- United States Bankruptcy Court for the Western District of Texas, 2022
Experience
- Senior Attorney, Internal Revenue Service: Office of Chief Counsel, Large Business & International, 2018 - 2022
- Intern - Large Business & International, 2018
- Intern - Small Business/Self-Employed, 2016
- Trial Attorney, U.S. Department of Justice, Tax Division, Civil Southwestern Section, 2022 - 2023
- Intern - Civil Eastern Section, Criminal Northern Section, 2017
