Jennifer Winter Sprengel attorney photo

Jennifer W. Sprengel began her legal practice in 1990 and has handled a variety of commercial litigation matters in federal and state courts. She joined the firm in 1992 and is resident in its Chicago, Illinois Office. She serves as the firm’s managing partner. Ms. Sprengel is an experienced class action litigator in a wide variety of complex litigation matters. Her experience includes antitrust, commodities, securities and consumer law claims. Ms. Sprengel has played major roles as co-lead counsel in actions involving such name-brand prescription drugs as Coumadin and Synthroid, and products such as CertainTeed. Federal Judge Herman Weber praised Ms. Sprengel’s work on the co-lead counsel team as having provided “the highest professional service” to clients.

Ms. Sprengel is a member of the Seventh Circuit Council on eDiscovery and Digital Information, formerly known as the Seventh Circuit’s E-Discovery Pilot Program, which was initiated as a process to develop, implement, evaluate and improve pretrial litigation procedures to provide fairness to all parties while seeking to reduce the cost and burden of electronic discovery consistent with Rule 1 of the Federal Rules of Civil Procedure. She is a frequent speaker and author on the topic of eDiscovery. She serves as co-chair of the Antitrust Law subcommittee of the ABA Class Action and Derivative Suits committee. 


Ms. Sprengel is a 1990 graduate of DePaul University College of Law, where she was a member of the DePaul University Law Review and served at the DePaul Legal Aid Center as a 711-licensed student attorney. Her undergraduate degree was conferred by Purdue University in 1987.

Involvement and Memberships

  • American Bar Association – Co-Chair Antitrust Law Subcommittee of the Class Actions & Derivative Suits Committee
  • Public Justice Foundation
  • Seventh Circuit Council on eDiscovery and Digital Information
  • Member of The Sedona Conference® Working Group on Electronic Document Retention and Production (WG1)

Jurisdictions Admitted to Practice

Ms. Sprengel is licensed to practice in the State of Illinois; the United States Courts of Appeal for the Third, Seventh and Ninth Circuits and the United States District Court for the Northern District of Illinois.