Thomas M. Flanagan

Thomas M. Flanagan

Call Attorney Email Attorney View Vcard


Thomas M. Flanagan concentrates his practice in complex business litigation and civil appeals in the state and federal courts of Louisiana. Mr. Flanagan has substantial experience in all aspects of commercial litigation, including contract claims, unfair trade practices, corporate and shareholder disputes, RICO claims, antitrust suits, securities claims, and health-care disputes. He is recognized as a seasoned trial lawyer to whom companies and individuals turn in high-stakes litigation. In a recent profile, Chambers USA reported on Mr. Flanagan: “His peers commend his advocacy skills. One source stated: ‘He has a very sincere, likable way about him in front of the jury. He is outstanding.’ Another confirmed that he is ‘bright, focused and tenacious.’” Mr. Flanagan has also lectured frequently in the area of appellate practice. He was named the New Orleans Appellate Practice “Lawyer of the Year” in 2018.

Mr. Flanagan is an Adjunct Professor at Tulane Law School, where he teaches Civil Law Torts; a member of the American Law Institute; and an advocate recognized by Best Lawyers in America in, among other areas, bet-the-company litigation.

Mr. Flanagan graduated magna cum laude from Georgetown University. He earned his law degree summa cum laude at Tulane Law School, where he was first in his graduating class. After law school, he clerked for the Hon. John Minor Wisdom on the United States Court of Appeals for the Fifth Circuit.

News & Recognition

  • Best Lawyers in America, Appellate Practice (2008-19), Commercial Litigation (2013-19). Bet-the-Company Litigation (2015-2019).
  • Best Lawyers in America, New Orleans Appellate Practice “Lawyer of the Year” (2018) (also in 2015)
  • Profiled in Chambers USA, Louisiana General Commercial Litigation (2014–18)
  • Top 50, Louisiana Super Lawyers® (2009–19)
  • Top 50, New Orleans Super Lawyers® (2013–19)
  • Litigation Star, Louisiana, Benchmark Litigation (2016–18)
  • Recipient, Arceneaux Professionalism Award from the New Orleans Bar Association (2017)

First-Chair Jury Experience

  • Civil District Court, Orleans Parish. Defense of an apartment-complex owner in this negligence case. After a three-day jury trial, the jury allocated only 15% fault to the defendant.
  • Middle District of Louisiana. Defense of the former board chairperson in this First Amendment retaliation case. After a three-day jury trial in the Middle District of Louisiana (Baton Rouge), the district judge granted the defense a judgment as a matter of law and dismissed all claims. The U.S. Fifth Circuit affirmed the ruling.
  • Eastern District of Louisiana. Representation of an environmental-remediation company in this $18 million federal securities-fraud case arising from the Gulf oil spill. The plaintiffs were former investors. After a two-week trial in the Eastern District of Louisiana (New Orleans), the jury rejected the plaintiffs’ claims in their entirety and awarded them nothing. The court then denied the plaintiffs’ motion for a new trial and ordered them to pay the defendants over $60,000 in court costs. The U.S. Fifth Circuit affirmed the jury’s verdict in its entirety.
  • Civil District Court, Orleans Parish. Representation of the plaintiff in this multi-million-dollar business dispute against a large bank. After a five-day jury trial and a verdict, the case settled on confidential terms.
  • Civil District Court, Orleans Parish. Representing local information-technology companies against developers/manufacturers of crime-camera technology. In this high-profile trade secrets/trade practices case, Mr. Flanagan took the lead role in challenging the plaintiffs’ trade-secrets claim, which the jury rejected entirely.

Other Recent Engagements

  • Representing an oilfield-service company in litigation against investors who breached a promise to acquire the company and related assets.
  • Representing, as appellate counsel, an independent mineral-exploration company ordered to pay millions in contract-based damages.
  • Representing a law firm in a contractual dispute over a multi-million-dollar legal fee.
  • Representing, as local counsel, a national manufacturer of swimming-pool products in multi-district litigation in which the plaintiffs allege antitrust violations.
  • Representing a public university in high-profile litigation in which the plaintiffs seek to impose liability on the school for the consequences of off-campus, prohibited hazing activities.
  • Representing, as appellate counsel, a Fortune 500 Company in multiple challenges to seven-figure personal-injury judgments.

Professional Affiliations

  • Tulane Law School, Adjunct Professor of Law teaching Civil Law Torts
  • Member, American Law Institute
  • Member, Tulane Law Review Board of Advisory Editors
  • Member, Board of Governors of the Bar Association of the Fifth Federal Circuit
  • Director, New Orleans Bar Association
  • Past President, Federal Bar Association—New Orleans Chapter (2004–05)
  • Member, Louisiana State, Federal, and New Orleans Bar Associations
  • Member, House of Delegates, Louisiana State Bar Association
  • Director, St. Thomas More Catholic Lawyers Association
  • Assistant Bar Examiner, Business Entities and Negotiable Instruments (2001–13)
  • Director, Tulane/Canal Neighborhood Development Corporation (2000–17)
  • Member, Louisiana Board of Legal Specialization, Appellate Practice Advisory Commission
  • Co-chair, Louisiana State Bar Association Continuing Legal Education Program Committee
  • Co-chair, LSBA Advanced Appellate Practice Seminar
  • Chair, New Orleans Bar Association Complex Litigation Committee

Representative Cases

  • Slaughter v. Clayton, No. 18-30181 (5th Cir. 2018)
  • Hackett v. Murphy Exploration & Prod. Co., 216 So. 3d 63 (La. App. 3d Cir. 2017)
  • Central Properties v. Fairway Gardenhomes, LLC, 225 So. 3d 441 (La. 2017)
  • Krieger v. USDT Properties/Mutual of Omaha Bank, 199 So. 3d 1194 (La. App. 1st Cir. 2016)
  • Blanks v. Entergy Gulf States LA, LLC, 189 So. 3d 599 (La. App. 3d Cir. 2016)
  • Slaughter v. Board of Supervisors of Southern University and Agricultural and Mechanical College, 197 So. 3d 165 (La. App. 1st Cir. 2016)
  • Chatman v. Southern University, 197 So. 3d 366 (La. App. 4th Cir. 2016)
  • Olympia Minerals, LLC v. HS Resources, Inc., 171 So. 3d 878 (La. 2014)
  • Emigh v. West Calcasieu Cameron Hosp., 145 So. 3d 369 (La. 2014)
  • In re West Feliciana Acquisition, L.L.C., 744 F.3d 352 (5th Cir. 2014)
  • Sabillon v. Max Specialty Ins. Co., 137 So. 3d 707 (La. App. 4th Cir. 2014)
  • Moreno v. Entergy Corp., 105 So. 3d 40 (La. 2012)
  • Contogouris v. WestPac Resources, LLC, 2012 WL 3017521 (La. 2012)
  • C.R. Pittman Construction Co. v. National Fire Insurance Co. of Hartford, 453 Fed. Appx. 439 (5th Cir. 2011)
  • Moreno v. Entergy Corp., 62 So. 3d 704 (La. 2011)
  • Dean v. Entergy Louisiana, LLC, 2010-887 (La. App. 5th Cir. 2010)
  • Rainey v. Entergy Gulf States, Inc., 35 So. 3d 215 (La. 2010)
  • Stone v. Entergy Services, Inc., 9 So. 3d 193 (La. App. 4th Cir. 2009)
  • Benefit Recovery, Inc. v. Donelon, 521 F.3d 326 (5th Cir. 2008)
  • Neikirk v. Resource Management, Inc., 983 So. 2d 106 (La. App. 5th Cir. 2008)
  • In re Crutcher-Tufts Resources, Inc., 504 F.3d 535 (5th Cir. 2007)
  • Abraham v. Richland Parish Hosp. Serv. Dist. 1-B, 938 So. 2d 1163 (La. App. 2d Cir. 2006), writ denied, 948 So. 2d 124 (La. 2007)
  • Louisiana Health Service & Indemnity Co. v. Rapides Healthcare System, 461 F.3d 529 (5th Cir. 2006)
  • Whitley v. Regional Transit Authority, 913 So. 2d 169 (La. App. 4th Cir. 2005)
  • Crutcher v. Tufts, 898 So. 2d 529 (La. App. 4th Cir. 2005)
  • BizCapital Business & Industrial Development Corp. v. Union Planters Corp., 884 So. 2d 623 (La. App. 4th Cir. 2004), writ denied, 889 So. 2d 267 (La. 2005)
  • In re Tufts Oil and Gas-III, 871 So. 2d 476 (La. App. 5th Cir. 2004)
  • Royal Street Grocery, Inc. v. Entergy New Orleans, Inc., 811 So. 2d 120 (La. App. 4th Cir. 2002)
  • In re Transit Management of Southeast Louisiana, Inc., 311 N.L.R.B. 30 (2000)
  • Thornton v. General Motors Corp., 136 F.3d 450 (5th Cir. 1998)
  • Production Supply Co. v. Fry Steel, Inc., 74 F.3d 76 (5th Cir. 1996)
  • Acme Refrigeration Supplies, Inc. v. Acme Refrigeration of Baton Rouge, 961 F. Supp. 936 (E.D. La. 1996)
  • Diez v. Daigle, 686 So. 2d 966 (La. App. 4th Cir. 1996)
  • IP Timberlands Operating Co., Ltd. v. Denmiss Corp., 657 So. 2d 282 (La. App. 1st Cir. 1995)
  • Fayard v. Landry, 651 So. 2d 1370 (La. App. 5th Cir. 1995)
  • United States v. Cavin, 39 F.3d 1299 (5th Cir. 1994)


Tulane Law School, J.D., 1989, summa cum laude

  • Order of the Coif
  • Articles Editor, Tulane Law Review
  • Faculty Medal, highest cumulative average

Georgetown University, A.B., 1986, magna cum laude

Judicial Clerkship

Hon. John Minor Wisdom, U.S. Fifth Circuit Court of Appeals, 1989-90

Areas of Practice