Caitlin Callahan


Caitlin Callahan is an Associate at Wilkinson Stekloff.  She has represented corporate clients in internal investigations and in products liability, breach of contract, antitrust, and other civil and criminal litigation matters.  Before joining the firm, Caitlin clerked for the Honorable Paul L. Friedman of the U.S. District Court for the District of Columbia.

Prior to clerking, Caitlin served as the Dale & James Pinto Fellow at Robert F. Kennedy Human Rights, where she litigated cases of violence against women and indigenous communities before international mechanisms.  Caitlin graduated cum laude from the Georgetown University Law Center, where she was a Public Interest Law Scholar and a Global Law Scholar.  During law school, she served as a teaching assistant for a legal research and writing course and held a number of internships, including with the U.S. Senate Judiciary Committee, the National Women’s Law Center, Human Rights Watch, and the U.S. Department of Justice, Human Rights & Special Prosecutions Section.  Before attending law school, Caitlin worked in global and domestic health policy advocacy and programs.


  • Undergraduate: Northwestern University, B.A. (2012)
  • Law: Georgetown University Law Center (2017), cum laude

    Executive Editor, Georgetown Journal of International Law; Appellate Litigation Clinic; Public Interest Law Scholar; Global Law Scholar


  • Judge Paul L. Friedman, U.S. District Court for the District of Columbia (2018-19)

Notable Matters

  • Served as member of the defense team in Clark v. Monsanto, a trial involving claims that the herbicide Roundup causes Non-Hodgkin Lymphoma. Clark was the fourth case in this mass tort to go to trial; the three previous trials resulted in verdicts against Monsanto ranging from $81 million to over $2 billion. After a single day of deliberation, a jury delivered the first-ever verdict for Monsanto in the Roundup mass tort litigation.