Karen L. Eisenstadt | White & Case LLP International Law Firm, Global Law Practice

Karen L. Eisenstadt

Associate, Boston


Karen Eisenstadt focuses her practice on white-collar and securities defense and complex commercial litigation.

Karen regularly represents health care and life sciences clients in government investigations, qui tam actions, and consumer protection lawsuits.  Karen also advises clients involved in complex, multi-jurisdictional disputes, and recently represented a former hedge fund manager in a successful trial defense to criminal insider trading charges.

Karen previously served as a law clerk to the Honorable Sandra S. Ikuta of the US Court of Appeals for the Ninth Circuit.  While in law school, Karen was an executive editor of the Harvard Law Review and a semi-finalist in the Ames Moot Court Competition.


Bars and Courts

  • Massachusetts State Bar
  • US Court of Appeals for the Second Circuit
  • US District Court for the District of Massachusetts


  • JD, Harvard Law School
  • AB, Harvard College


  • English


Representation of a global life sciences company with respect to a multi-jurisdictional FCPA investigation.

Representation of numerous health care and life sciences clients in False Claim Act investigations, qui tam actions, and related civil lawsuits involving eligibility for Medicare reimbursement; the Stark law; the Anti-Kickback Statute; and consumer protection issues.*

Defense of a former hedge fund manager on criminal insider trading charges. The jury acquitted on all counts.*

Representation of an international manufacturer in the DOJ Antitrust Division's auto parts investigations.*

Representation of a medical devices company in conducting FCPA due diligence.

Drafted a successful Second Circuit brief affirming a motion to dismiss in a consumer protection class action.*

Member of trial team securing a jury verdict of invalidity and non-infringement in biotech patent case.*

Pro bono representation of a Rhode Island state inmate in his petition for post-conviction relief.

Pro bono representation of a Massachusetts state inmate in a § 1983 failure-to-protect action.*

*Matters prior to joining White & Case.


  • The Crime Fraud Exception in the Wake of Gorski et al., Mass. Lawyers Weekly, (Dec. 4, 2014) , (co-author)