Sean M. Corpstein


Legal Assistant


  • The University of Iowa College of Law
  • Wartburg College
    2011; Magna Cum Laude


  • States: Iowa
  • Federal Courts: Northern District of Iowa, Southern District of Iowa, Eighth Circuit Court of Appeals
Mitchell and Corpstein Secure Defense Verdict on Plaintiffs’ Claim Seeking $925,561.36

Following a four day jury trial in Woodbury County, Clark Mitchell and Sean Corpstein obtained a defense verdict on behalf of their client, State Farm Fire and Casualty Company. Plaintiffs’ breach of contract claim followed a fire at Plaintiffs’ farm/ranch in 2013 and State Farm voiding the insurance Policy as a result of Plaintiffs’ conduct.  […]

Sean Corpstein is a partner in the firm’s litigation division. Sean’s practice focuses on complex civil litigation, trial work, appellate practice, and white collar criminal defense.  He represents clients in state and federal courts, including, when necessary, trying cases to verdicts and maintaining those verdicts on appeal.

In his civil practice, Sean represents individuals and businesses in a wide-array of matters, including breach of contract, business disputes, bad faith, dram shop, employment, false claims act, health law, products and premises liability, administrative matters, homeowner’s associations, personal injury, and wrongful death.

In his criminal practice, Sean represents individuals and businesses in white collar matters.  Although Sean’s practice focuses on assisting clients on issues related to health care and finance/banking, he also represents clients facing other charges, including government regulation, immigration, and conspiracy. In addition, Sean is a member of the Criminal Justice Act Federal Defender Panel.

Sean is a member of the Polk County Bar Association, the Iowa State Bar Association, and the American Bar Association. Prior to joining Grefe and Sidney, Sean clerked for Chief District Court Judge Leonard T. Strand in the Northern District of Iowa.