Steven J. Horowitz



One South Dearborn
Chicago, Illinois 60603
+1 312 853 7143

Admissions & Certifications

Steven J. Horowitz


STEVEN J. HOROWITZ is an associate in the Chicago office. His practice focuses on drafting critical motions and providing strategic advice in litigation involving technology and competition, with a particular emphasis on intellectual property and appellate matters. He has extensive experience in Hatch-Waxman litigation, disputes over standard-essential patents, and antitrust cases involving professional associations.

Prior to joining the firm, Mr. Horowitz served as a law clerk to Justice Anthony M. Kennedy of the United States Supreme Court and Judge Richard A. Posner of the United States Court of Appeals for the Seventh Circuit.

Mr. Horowitz graduated first in his class from Harvard Law School, where he served as an Articles Editor on the Harvard Law Review and was awarded the Fay Diploma, the Sears Prize, and the Irving Oberman Memorial Award in Intellectual Property (twice).

Since joining Sidley, Mr. Horowitz has maintained an active pro bono practice, receiving Sidley’s Honor Roll Recognition for significant pro bono service hours. He has also co-taught a seminar on Technology Policy at the University of Chicago Law School.


Mr. Horowitz’s experience includes:

  • Drafting briefs on dispositive motions and claim construction in pharmaceutical patent litigation;
  • Developing strategies for resisting injunctive relief and excessive royalties on standard-essential patents;
  • Successfully briefing and arguing a motion to dismiss in a case that challenged a professional association’s administrative determination; and
  • Drafting briefs at all levels of the state and federal courts on a wide range of issues, from antitrust to ERISA.
Memberships & Activities

Mr. Horowitz is a member of the Intellectual Property Section of the American Bar Association. He has given presentations on technology and competition law issues for the law school faculties at Yale, Harvard, Cornell, UCLA, and William & Mary, as well as for the American Bar Association’s Section of Antitrust Law.

In the 2012-2013 academic year, Mr. Horowitz served as a Lecturer in Law at the University of Chicago Law School, where he taught a class on technology policy.

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