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314.889.7017
  • Education
    • LL.M., with merit, London School of Economics and Political Science, 2010
    • J.D., magna cum laude, University of Missouri-Kansas City School of Law, 2009, U.M.K.C. Law Review
    • B.A., Western Michigan University, 2006
Aaron Chickos focuses his practice on defending companies against toxic and mass tort claims. Aaron has experience representing a diverse clientele in a range of high profile, complex litigation and arbitration matters in a variety of industries, including: 
  • Pharmaceutical
  • Manufacturing
  • Energy 
  • Financial services
Aaron has significant experience drafting pleadings, developing complex fact and expert evidence, deposing witnesses, preparing witnesses for trial and managing multi-jurisdictional document discovery. He also has considerable experience representing clients in international commercial arbitration (including under the ICC, LCIA and UNCITRAL arbitration rules) and cross-border regulatory compliance matters.

Prior to joining Polsinelli, Aaron practiced in the London office of a leading international law firm.

  • Manage toxic tort/product liability cases pending in Madison County, IL against clients in automotive, heavy equipment and electrical component manufacturing industries.
  • Significant experience deposing witnesses in cases pending in Missouri and Illinois and as local counsel in cases pending in California, New Jersey and Oregon.
  • Obtained favorable consent award as lead counsel on behalf of global services company in multi-million dollar ICC arbitration seated in Illinois and governed by Delaware law.
  • Represented mid-stream natural gas company in multi-jurisdictional dispute involving pipeline construction dispute.
  • Successfully defended multinational financial services company in multiparty LCIA arbitration seated in London, UK and governed by English law.
  • Successfully defended natural gas importer in ICC arbitration seated in Switzerland involving price re-opener claims under a long-term LNG supply contract governed by New York law.