Boris A. Kaupp Partner


Boris completed his legal studies in his native Germany before moving to the United States, where he earned a Master of Laws degree in American Law and a Certificate in International and Comparative Law at Saint Louis University. He practices primarily in the firm’s construction law and commercial litigation departments. Prior to joining McCarthy Leonard & Kaemmerer, LC., he practiced at the law firm of Reinert Weishaar & Associates, P.C. (f/k/a Reinert & Rourke, P.C.).

Professional Affiliations and Activities

  • Member, The New York Bar (2002)
  • Member, The Missouri Bar (2002)
  • Member, The Illinois Bar (2007)
  • St. Louis Stuttgart Sister Cities – Officer / Board Member
  • German School Association of Greater St. Louis – Teacher


  • 2001 LL.M. in American Law, St. Louis University School of Law
  • 2001 Certificate in International and Comparative Law, St. Louis University School of Law
  • 1995 State Examination of Law, Eberhard-Karls-University, Tuebingen, Germany
  • 1994 ERASMUS Certificate, Universita Degli Studi, Catania, Italy


  • Lewis v. Bellefontaine Habilitation Center, 122 S.W.3d 105 (W.D.Mo. 2003)
  • Delta Consulting Group v. R. Randle Construction et al., 554 F.3d 1133 (7th Cir. 2009)

Reported Decisions

  • “Res Judicata and Collateral Estoppel in Surety and Fidelity Bond Cases”, 13th Annual Northeast Surety & Fidelity Claims Conference, Atlantic City, NJ, 2002 (co-author)
  • “International Letters of Credit-Characteristics and Problems”, Center for International Legal Studies, International Construction Law Conference, Steamboat Springs, CO, 2003 (co-author, presenter)
  • “Construction Contracts From A to Z” NBI, Clayton, MO, 2010 (co-author, presenter)