David C. Knieriem Law Offices David Knieriem, St. Louis Mr. David Knieriem is the principal of the Law Offices of David C. Knieriem, located in Clayton, Missouri. Since 1990, he has concentrated exclusively in civil litigation, trying over sixty cases before a jury to verdict. He has written numerous articles for the St. Louis Lawyer and the Journal of the Missouri Bar on deposition and trial techniques, tort law and insurance law. His present practice emphasizes direct actions against insurance companies.