Jack B. Prior, a trial attorney, aggressively litigates matters locally and nationally on behalf of clients ranging from individuals to small businesses to Fortune 500 companies. Jack dedicates a significant percentage of his practice to complex products and premises liability disputes. Jack also has an extensive background litigating class actions, intra-company disputes, breach of business contracts, unlawful business practices and additional matters involving the Limited Liability Company Act.

Jack takes pride in managing every facet of a complicated case.  He takes a proactive approach emphasizing pre-suit investigation and early litigation analysis in order to effectuate the best strategic approach for each particular client and the unique circumstances of a dispute. He is well-versed in conducting fact and expert discovery, drafting and arguing successful case-dispositive motions and appellate briefs, and representing clients at hearings, mediations, settlement conferences and trial in both state and federal courts.  Jack’s number one priority is and will always be obtaining the best result for his client.

Jack, a Levitt Scholar, graduated cum laude from Hamilton College with a double concentration in mathematics and government.  After graduating with honors in an intellectual property concentration from Boston University School of Law, Jack served as a judicial extern for the United States District Court for the Northern District of Illinois.

Jack resides in Chicago with his wife Jennifer, a Chicago native, and their son.

  • Hamilton College, B.A. (Double Concentration in Mathematics and Government), cum laude, 2008
  • Boston University School of Law, (Concentration in Intellectual Property), J.D., with honors, 2011

  • Illinois, 2011
  • U.S. District Court, Northern District of Illinois, 2012
  • U.S. District Court, Southern District of Illinois, 2014

  • Dean's List
  • Levitt Scholar
Practice Highlights
  • Obtained judgment in the amount of $1,683,000 in favor of client due to breach of contract, breach of guaranty, and application of the exception to the Illinois Interest Act.
  • Tried week-long jury trial resulting in favorable verdict on behalf of clients in case involving a limited edition sports car.
  • Obtained summary judgment for multiple defendants in a premises liability dispute based upon the lack of duty to maintain, repair or warn as to de minimis conditions. Drafted Appellee Brief and procured affirmation from the State of Illinois Appellate Court Second District as to the same.
  • Obtained summary judgment in Federal Court as to cross-claim for breach of contract for failure to procure and maintain insurance and lack of good faith in denying the duty defend and indemnify.
  • Transferred matter pursuant to forum non conveniens in favor of corporate client and over the opposition briefing of plaintiff.

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