Adam Diederich

Adam is a problem-solver. He focuses his practice on resolving disputes involving ownership and control of privately held businesses, restrictive covenants, business torts, and complex contract claims.
Adam Diederich, Partner

Adam helps clients resolve disputes involving:

  • ownership and control of privately held businesses, including derivative and direct claims, breach of fiduciary duty claims, requests to inspect books and records, and breach of shareholder agreements and LLC agreements;
  • sports, media, and entertainment law;
  • restrictive covenants (noncompete and nonsolicitation agreements), trade secrets, and confidential information; and
  • business torts and complex contract claims.

His experience also includes drafting restrictive covenant agreements, representing professional associations, Freedom of Information Act requests, student discipline hearings, professional liability (malpractice) claims, trust and estate litigation, and animal law.

Adam strives to understand each client’s business to help advance their legal and business interests. He helps his clients solve problems through advice and counseling, mediation, arbitration, and litigation in state and federal courts. He has experience representing plaintiffs and defendants at all stages of litigation, from temporary restraining orders and preliminary injunctions to summary judgment, arbitration hearings, bench and jury trials, and appeal.

Before beginning his law career, Adam taught fourth grade as a Teach For America corps member.

Solving Disputes Series

Our content series, “Solving Disputes Among Business Partners and Owners,” helps owners anticipate potential problems when structuring their businesses and find solutions to common issues among owners of privately held businesses, both before and during litigation. Adam is a leading contributor to the series.

View Solving Disputes Series

Client Work

  • Drafted and argued successful motion for summary judgment to invalidate restrictive covenants in shareholder agreement.
  • Successfully prosecuted arbitration against marketing agency on behalf of professional athlete.
  • Successfully defended Michael Jordan against intellectual property claims.
  • Examined fact witnesses and cross-examined a forensic accountant in successful arbitration concerning assets worth tens of millions of dollars in an ownership dispute.
  • Front Range Equine Rescue v. Vilsack, 844 F.3d 1230 (10th Cir. 2017). Successfully argued against an appeal of an order denying the opposing party’s request to collect on injunction bond.
  • Deposed former officers and directors of a failed bank in connection with an investigation for negligence and breach of fiduciary duty.
  • Deposed lead inventor in Hatch-Waxman patent infringement case.
  • Deposed forensic psychologist in contested bankruptcy proceeding brought to dismiss the bankruptcy based on alleged bankruptcy fraud.
  • Briefed successful motions for a temporary restraining order and preliminary injunction in trade secret and post-employment restrictive covenant cases.
  • Briefed successful motions to dismiss business tort claims on behalf of a professional service firm. See, e.g.Abrams v. McGuireWoods LLP, 518 B.R. 491, 504 (N.D. Ind. 2014).
  • Briefed successful application for preliminary relief in state court litigation, resulting in the return of the dog to the client.
  • Defended multiple Chicago-area students in pro bono representations against attempted expulsion, both at expulsion hearings and through negotiated settlements.

Publications, Presentations & Recognitions


  • Crain's Chicago Business' Notable Rising Stars in Law (2021)
  • “A (Broad?) New NJ Encryption Requirement,” Schiff Hardin Insight (Feb. 27, 2015) 
  • “Seventh Circuit Reverses Decision for Reliance on Flawed Expert Testimony,” Expert Witnesses: News & Developments, American Bar Association Section of Litigation (Feb. 18, 2014)
  • “Trial Court’s Duty to Rule on Emergency Motions When Presented,” (co-author) CBA Record (Sep. 2011)


  • “Family Matters: Plan to Avoid and Limit Family Business Disputes,” Hawaii Tax Institute, Conference (Nov. 8, 2023)
  • “Keeping Controversy at Bay: Litigators’ Lessons for Family Offices,” ArentFox Schiff Family Office 101 Conference, Washington, DC (Jul. 26, 2023)


  • The Legal 500 United States (2022-2023)

Boards, Memberships & Certifications

  • Member, Board of Directors of Chicago Lawyers’ Committee for Civil Rights Under the Law
  • American Bar Association
  • Chicago Bar Association

Professional Activities

Adam is actively involved in pro bono legal work, including representation of students who face expulsion from school through the Chicago Lawyers’ Committee for Civil Rights Under Law’s Educational Equity Project, which named him the 2015 Educational Equity Project Advocate of the Year. In 2016, the Chicago Lawyers’ Committee for Civil Rights Under Law presented him with the Young Lawyer Pro Bono Award.

Adam also has represented clients in divorce, custody, and child support matters through ArentFox Schiff's Chicago Volunteer Legal Services Clinic, as well as criminal defendants and individuals seeking post-conviction relief.