Byron Carlson Petri & Kalb, LLC | attorneys at law

Christopher J. Petri

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Mr. Petri concentrates his practice in the area of commercial litigation. Throughout his career, he has represented multiple clients in a variety of areas, including residential and commercial construction, intellectual property, software and computer technology, ERISA, commercial contracts, products liability, physician / hospital disputes, employer / employee and insurance disputes.

Mr. Petri also has extensive experience in appellate practice. After graduating first in his class from the University of Missouri School of Law, he began his career as a clerk for the Honorable John R. Gibson of the United States Court of Appeals for the Eighth Circuit, and has practiced in the Eighth Circuit, the Missouri Court of Appeals and the Illinois Court of Appeals.


  • University of Missouri Columbia School of Law, Columbia, Missouri
    • J.D.
    • Honors: cum laude
  • Washington University
    • B.S.B.A.

Past Positions

  • Judge John R. Gibson, U.S. 8th Circuit Court of Appeals, Clerk, 1998 to 1999
  • Gallop Johnson Neuman, Associate Attorney, 1999 to 2004

Professional Associations

  • Bar Association of Metropolitan St. Louis, Member
  • Illinois State Bar Association, Member

Bar Admissions

  • Illinois
  • Missouri
  • U.S. District Court Eastern District of Missouri
  • U.S. District Court Southern District of Illinois
  • U.S. Court of Appeals 8th Circuit

Current Employment Position

  • Partner

Practice Areas

  • Commercial Litigation
  • Insurance
  • Construction
  • Products Liability
  • Intellectual Property
  • Physician / Hospital Disputes
  • Toxic Tort