Meet Larry


I’ve successfully practiced business litigation for more than 40 years with a pointed emphasis on contracts, securities fraud and antitrust matters. I graduated from Columbia University Law School in 1976, and I am a Master Emeritus in the American Inns of Court, an AV® Preeminent (five-star) rated lawyer at Martindale-Hubbel, and a Super Lawyer. I also served as a captain in the United States Air Force and obtained a Master of Arts in Economics during the time.

I am conscientious in my representation seeking the most efficient and successful resolution.


In my four decades of practicing business litigation, I’ve won an eight-figure and three seven-figure jury verdicts, and I’ve defended both large national and local clients, such as Wal-Mart Stores, Inc., Williams Companies’ affiliates and officers, and Urban Financial Group, Inc., the fourth largest reverse mortgage originator. I’ve certified classes in state and federal courts, prosecuted and defended against large class actions, won and successfully defended large derivative suits, and effectively prosecuted and defended appeals in state and federal circuit courts, e.g. Brady v. UBS Financial Services, Inc. 538 F.3d 1319 (10th Cir. 2008); and Farley v. Henson, 11 F.3d 827 (8th Cir. 1993). I’ve also won a seven-figure arbitration award and acted as a NASD arbitration panel chairman. See more Past Results.

As a boutique litigation practice, my firm, Pinkerton Law, P.C., offers a broad range of legal services in civil practice areas. Located in the heart of downtown Tulsa, the firm represents individual and business clients throughout Oklahoma and Western Arkansas. I also serve as local counsel and co-counsel for other law firms and routinely accept litigation referrals.


  • Wal-Mart Stores, Inc.
  • The Williams Companies
  • Safeway Inc.
  • Urban Financial Group, Inc.
  • Klienco Properties, Inc.
  • Glazer’s Wholesale Drug
  • Union Pacific Resources Company
  • Westinghouse, Inc.


  • Oklahoma state trial and appellate courts
  • United States District Courts for the Northern and Western Districts of Oklahoma
  • United States District Court for the Western District of Wisconsin
  • United States District Courts for the Eastern and Western Districts of Arkansas
  • United States District Court for the Western District of Michigan
  • United States District Court for the Northern District of Illinois
  • U.S. Court of Appeals, Tenth Circuit
  • U.S. Court of Appeals, Third Circuit
  • U.S. Court of Appeals, Eighth Circuit