Terence S. Ziegler


  • Loyola University New Orleans
    B.A. 1989
  • Tulane University
    J.D. 1992
  • Pennsylvania
  • Louisiana
  • USCA, Third Circuit
  • USCA, Fifth Circuit
  • USCA, Eleventh Circuit

Terence S. Ziegler is a partner at Kessler Topaz Meltzer & Check, L.L.P. where he has worked since 2005.  Since joining the Firm, he has focused his practice on antitrust and complex consumer litigation.  Terence is currently involved in a number of class action lawsuits against large pharmaceutical manufacturers in antitrust cases alleging improper reverse payment and generic suppression schemes.

Terence also served as a special assistant attorney general to several states in litigation involving the sales and marketing practices of major pharmaceutical companies.  These cases led to important injunctive relief and significant monetary recovery for those states. 

Terence’s extensive experience in complex cases also includes consumer class actions alleging improper insurer and lender practices in violation of RICO and RESPA.

Examples of Terence’s recent notable cases include In re Flonase Antitrust Litigation ($150 million settlement on behalf of direct purchasers); In re Wellbutrin SR Antitrust Litigation ($21.5 million settlement on behalf of end-payors); Alston v. Countrywide, et al. ($34 million settlement on behalf of borrowers); and Ligouri v. Wells Fargo & Co., et al. ($12.5 million settlement on behalf of borrowers).

Terence received his bachelor’s degree from Loyola University in 1989.  He earned his juris doctor from Tulane University in 1992.  He is a member of the Pennsylvania and Louisiana bars and is admitted to practice in several federal district and appellate courts across the country.


Speaking Engagements

Harris Martin’s Antitrust Pay for Delay Litigation Conference, September 22, 2014


“Fighting the high cost of healthcare,” Trial Magazine (October 2007)