Areas of Practice
  • Brigham Young University, J. Rueben Clark Law School, J.D., summa cum laude, 1990, Order of the Coif, Editor-in-Chief, Brigham Young University Law Review
  • University of Calgary, B.S. in Psychology, 1986
Judicial Clerkships
  • Hon. Justice Clarence Thomas and former Chief Justice Warren E. Burger, US Supreme Court, 1992-1993
  • Hon. John T. Noonan, US Court of Appeals, Ninth Circuit, 1990-1991
Bar & Court Admissions
  • Arizona

Karl M. Tilleman

201 E. Washington Street
Suite 1600
Phoenix AZ 85004
TEL: +1 602 257 5244
FAX: +1 602 257 5299

Karl Tilleman is a seasoned trial lawyer and class action litigator with nearly three decades of experience handling high-stakes cases for many of the nation’s largest financial institutions and corporations.  He has significant experience with litigations (including arbitrations and class claims) involving antitrust, intellectual property, RICO, insurance coverage and bad faith, construction, and environmental disputes.  

Mr. Tilleman leads Steptoe’s 120-lawyer Complex Commercial Disputes Group.  He played for the Canadian National Basketball Team in the 1984 and 1988 Olympics, setting a record for three-point shooting in the latter games that has never been broken.

Representative Matters

Recent and Current Matters:

  • Representing AIG and its affiliates and State Farm in complex coverage and bad-faith actions.
  • Representing The Salt River Project in an antitrust and tort action.
  • Represented the Harlem Globetrotters as lead trial counsel in an intellectual property action brought in Federal Court by Meadowlark Lemon, Curly Neal, and other former Globetrotter superstars.
  • Represented the University of Southern California and Urban Partners in a multimillion-dollar antitrust and RICO lawsuit in Federal Court in Los Angeles, California.
  • Represented Allstate Insurance Company and prevailed on summary judgment in numerous "bad faith" cases in federal and state courts across the country. 
  • Represented MetLife Bank in MERS foreclosure litigation in federal and state courts in Arizona, California, Nevada, and Utah, including multi-district litigation in Arizona and putative nationwide and statewide class actions.  Dismissals for MetLife Bank were obtained in several cases.
  • Represented Insurance Company of the State of Pennsylvania (an AIG affiliate) in a complex workers’-compensation bad-faith case alleging "institutional" bad faith and mishandling of the plaintiff’s claims for medical and lost-earnings benefits.  The court granted several motions for partial summary judgment, dismissing the plaintiff’s claims of bad faith, punitive damages, vicarious liability for the alleged malpractice of an independent medical examiner, and aiding and abetting – thereby effectively disposing of the case.  
  • Represented a MetLife entity in California state court in a multimillion-dollar action on issues of agency, fraud, negligence and breach of fiduciary duty arising from the sale of a life insurance policy.
  • Represented Western Union in a subpoena enforcement action versus the State of Arizona.
  • Represented Western Union in a contract dispute in the US District Court for the Central District of California.  The court granted summary judgment for Western Union in a published opinion, which contains important precedent dealing with contract interpretation under California law.


  • Best Lawyers in America, Insurance Law, 2011 - 2017
  • Southwest Super Lawyers, Business Litigation, 2009 - 2016
  • Legal 500 US, Litigation: Commercial Litigation, 2015
  • Chambers USA: America’s Leading Business Lawyers, Litigation: General Commercial (Arizona), 2011-2012
  • Arizona's Finest Lawyers, 2011

Select News & Events

Selected Publications

  • Co-author, “Closing the Book on CERCLA Section 107 ‘Joint and Several’ Claims by Liable Parties"
    1999, 18 Va. Envtl. L.J. 160
  • Does the Tenth Amendment Pose Any Judicial Limit on the Commerce Clause After Garcia v. San Antonio Metropolitan Transit Authority and South Carolina v. Baker?
    1989, B.Y.U. L. Rev. 231