Thomas V. Linguanti
Thomas V. Linguanti represents clients in complex tax controversies and tax litigation. He assists clients in determining the appropriate strategy in disputes with the US Internal Revenue Service during audit, alternative dispute resolution proceedings, and trial and appellate litigation. Tom represents both US and non-US corporations, as well as individuals. He began his tax litigation career as a trial and appellate attorney in the Tax Division of the US Department of Justice.
Tom has more than three decades of experience representing clients before the US Tax Court, federal district and bankruptcy courts, federal appeals courts, the US Court of Federal Claims, and in briefing matters before the US Supreme Court.
Tom is a frequent speaker at conferences and seminars on various aspects of federal tax controversies and negotiation strategies. He currently serves as a teaching faculty member of the National Institute for Trial Advocacy (NITA) and regularly teaches advocacy skills to government, public interest, and private firm lawyers. Before joining Morgan Lewis, Tom was a partner in the tax practice of another global law firm, where he was chair of its North American Tax Practice Group Management Committee.
- Perrigo Company v. United States of America, 1:17-cv-00737-RJJ
- CGG Americas, Inc. v. Commissioner, 147 T.C. 78 (2016)
- Abbott Labs v. Commissioner, Tax Ct. No. 29307-11
- Medtronic, Inc. v. Commissioner, Tax Ct. No. 6944-11
- Sergio Garcia v. Commissioner, Tax Ct. No. 13469-10
- Medtronic, Inc. v. Commissioner, Tax Ct. No. 17488-08
- The May Dep’t Stores Co. v. Commissioner of Revenue, ATB Nos. C284427 & C284428 (2007)
- The Dow Chemical Co. v. Department of Revenue, 359 III App. 3d 1 (2005) (lead counsel before ALJ)
- Microsoft Corp. v. Commissioner, 311 F.3d 1178 (9th Cir. 2002), rev’g 115 T.C. 228 (2000)
- Seagate Technology, Inc. v. Commissioner, Tax Ct. No. 15086-98
- Compaq Computer Corp. v. Commissioner, 277 F.3d 278 (5th Cir. 2001), rev’g 113 T.C. 214 (1999)
- Perkin-Elmer Corp. v. Commissioner, Tax Ct. No. 20052-98
- Schneider Electric Holdings Inc. v. Commissioner, Tax Ct. Nos. 12225-02, 12226-02, and 12227-02
- Sutherland Lumber-Southwest, Inc. v. Commissioner, 255 F.3d 495 (8th Cir. 2001)
- AMP, Inc. v. United States, 185 F.3d 1333 (Fed. Cir. 1999)
- Meisner v. United States, 133 F.3d 654 (8th Cir. 1998)
- Riley v. United States, 118 F.3d 1220 (8th Cir. 1997)
- Internal Revenue Service v. Kaplan, 104 F.3d 589 (3d Cir. 1997)
- Pike v. United States, 88 F.3d 54 (1st Cir. 1996)
- State of Arkansas v. Farm Credit Services, 520 US 821 (1997) (appearing at oral argument as second chair to amicus)
- Research, Inc. v. United States, 95-2 U.S. Tax Cas. 50,407 (D. Minn. 1994)
- Miller v. United States, 95-1 UST.C. 50,068 (D.N.D. 1994), aff’d, 65 F.3d 687 (8th Cir. 1995)
- Woodbury v. United States, 93-2 UST.C. 50,528 (D.N.D. 1993), aff’d, 27 F.3d 572 (8th Cir. 1994)
- Keller v. United States, 93-2 UST.C. 50,551 (D.N.D. 1993), aff’d, 46 F.3d 851 (8th Cir. 1995)
- 1995)
- Erickson v. Commissioner, 172 Bankr. 900 (Bankr. D. Minn. 1994)
- Fordham University School of Law, 1990, J.D.
- Central Michigan University, 1985, B.S., cum laude
- Illinois
- New York
- Supreme Court of the United States
- US Court of Appeals for the First Circuit
- US Court of Appeals for the Second Circuit
- US Court of Appeals for the Fourth Circuit
- US Court of Appeals for the Fifth Circuit
- US Court of Appeals for the Sixth Circuit
- US Court of Appeals for the Seventh Circuit
- US Court of Appeals for the Eighth Circuit
- US Court of Appeals for the Ninth Circuit
- US Court of Appeals for the Tenth Circuit
- US Court of Appeals for the Federal Circuit
- US Court of Federal Claims
- US Tax Court
- US District Court for the Northern District of Illinois
- US District Court for the Southern District of Texas
- US District Court for the Western District of Michigan


Leading Partner, Tax: US taxes: contentious, The Legal 500 US (2025)
Recommended, Tax: US taxes: contentious, The Legal 500 US (2018–2020, 2022–2025)
Band 1, Tax: Controversy, Illinois, Chambers USA (2025)
Ranked, Tax: Controversy, Nationwide, Chambers USA (2017–2025)
Ranked, Tax: Controversy, Illinois, Chambers USA (2017–2024)
Highly Regarded, Tax Controversy, Illinois, International Tax Review's World Tax Guide (2025)
Recognized, Litigation and Controversy - Tax, Chicago, The Best Lawyers in America (2023)
Recognized, Tax Law, Chicago, The Best Lawyers in America (2023)
Member, Practice Group of the Year, Tax, Law360 (2017)
Tax MVP, Law360 (2016)
Member, Illinois State Bar Association
Member, New York State Bar Association
Member, Sections of Taxation and Litigation, American Bar Association
Member, Chicago Bar Association
