Mr Mark Yopp > McDermott Will & Emery LLP > New York, United States > Lawyer Profile

McDermott Will & Emery LLP
NEW YORK, NY 10173-1922
United States
Mark Yopp photo

Work Department

State & Local Tax




Partner Mark W. Yopp focuses his practice on state and local tax matters, including state tax controversy, multistate planning, and federal and multistate legislative monitoring and analysis. He focuses on corporate/franchise tax, sales tax, withholding taxes and unclaimed property. He also has extensive experience assisting clients with the state tax implications of new and emerging technologies, including digital goods and services, cloud computing and electronic commerce. In addition to speaking regularly on state tax topics, Mark has co-authored a number of articles on various state tax and unclaimed property issues. While in law school, he served on the editorial board of the Emory Bankruptcy Developments Journal.

Please visit McDermott’s website for full biography.

Lawyer Rankings

United States > Tax > US taxes: contentious

The ‘very knowledgeable‘ team at McDermott Will & Emery LLP assists clients with tax controversies, administrative appeals and tax litigation. Dallas-based Mark Thomas and Laura Gavioli were involved in representing several high-profile parties, including former Brazil central bank president Arminio Fraga, in a case against the IRS for alleged improper capital gains treatment afforded to Fraga’s hedge fund and private equity company, Gávea Investimentos. Another major highlight for the team was a complete victory in the US Tax Court case Illinois Tool Works Inc. & Subsidiaries, v. Commissioner of Internal Revenue, led by Caroline Ngo out of Washington DC. Chicago counsel Roger Jones is well respected, and Jane May and  Mark Yopp are also notable. The firm welcomed Charles Moll and Troy Van Dongen into the firm’s San Francisco office and counsel Marcy Jo Mandel into its Los Angeles office in August 2018; the trio joined from Winston & Strawn LLP. The group also added Steven Hadjilogiou and two associates to its Miami office in March 2018; they joined from Baker McKenzie LLP. Departures included Robin Greenhouse to the IRS as a division counsel in June 2018; Dallas partner Kristina Novak to the IRS as an associate chief counsel in August 2018; Madeline Chiampou to S&P Global in September 2018; and Gale Chan to PwC in August 2018. Todd Welty left for an in-house role in 2019.