Diana Erbsen has more than two decades of experience in the tax controversy area, where she focuses on federal, state, and local tax controversies, including criminal tax matters. Diana has significant experience representing clients in all aspects of sophisticated, challenging tax disputes. She has been recognized by the American College of Tax Counsel as a Fellow and is a frequent speaker at national tax conferences and forums.

From 2014 to 2017, Diana served as the Deputy Assistant Attorney General for Appellate and Review for the Tax Division of the US Department of Justice, a position to which President Barack Obama appointed her. In this role, Diana oversaw the Appellate Section (responsible for all appellate litigation, including to the Supreme Court), the Office of Review (responsible for civil settlements), and the Financial Litigation Unit (tasked with collecting judgments secured by the Trial Sections of the Tax Division). Additionally, Diana was actively involved in the management and operations of the Civil and Criminal Sections of the Tax Division and represented the DOJ on the Advisory Committee on Bankruptcy Rules. She was recognized in January 2017 by IRS Chief Counsel William Wilkins, with the Chief Counsel Award (the highest honor that can be conferred by that office) for her leadership and oversight of the Appellate Section. Her contributions to the precedent-setting Altera v. Commissioner case, a model for the government's defense of cases pending in the District Court and the Tax Court, were expressly noted.

About Us: DLA Piper is a global law firm with lawyers located in more than 40 countries throughout the Americas, Europe, the Middle East, Africa and Asia Pacific, positioning them to help clients with their legal needs around the world. They strive to be the leading global business law firm by delivering quality and value to our clients. They achieve this through practical and innovative legal solutions that help our clients succeed. DLA Piper delivers consistent services across theirr platform of practices and sectors in all matters they undertake. Their clients range from multinational, Global 1000, and Fortune 500 enterprises to emerging companies developing industry-leading technologies. They include more than half of the Fortune 250 and nearly half of the FTSE 350 or their subsidiaries. They also advise governments and public sector bodies.