Rob Katerberg represents clients in the complex litigation matters that have the highest stakes and most cutting-edge issues. Practicing in federal and state courts across the country, he focuses particularly on class actions, antitrust, and constitutional issues. Mr. Katerberg thrives on navigating complicated legal and factual thickets and developing innovative legal arguments and big picture strategies to achieve favorable resolutions for clients. Mr. Katerberg draws on years of experience as a trial attorney in the US Department of Justice’s Civil Division, where he served as lead counsel for federal agencies in landmark constitutional and statutory cases, to assist businesses with civil litigation against or involving the federal government. Mr. Katerberg served as a law clerk to The Honorable R. Lanier Anderson III on the United States Court of Appeals for the Eleventh Circuit between law school and entering practice.


  • Largest US steel producer in antitrust class actions against major US steel producers alleging industry-wide conspiracy to cut production.
  • Largest US steel producer in defense against antitrust "group boycott" lawsuit, including six-week jury trial and later appeal resulting in total exoneration of client.
  • Pharmaceutical company in First Amendment challenge to overbroad restrictions on marketing activities.
  • Steel joint venture in lawsuit by disgruntled former distributor alleging antitrust price discrimination, contract, and business tort claims.
  • Government contractor in series of privacy class actions over third-party theft of data tapes.
  • Federal Housing Finance Agency in cases raising many issues of first impression surrounding the conservatorships of Fannie Mae and Freddie Mac.
  • Manufacturerin toxic tort class action relating to historical contamination issues.
  • Defense contractor in noncompete/trade secrets litigation against former employees.
  • DC tenants associations in developing litigation strategies to vindicate tenants’ rights under the DC Tenants Opportunity to Purchase Act (TOPA).
  • American Samoans in pro bono case challenging constitutionality of US Government policy denying them birthright US citizenship.


The Legal 500 US
General Commercial Disputes (2019)
Antitrust: Civil Litigation/Class Actions (2018)


  • JD, University of North Carolina at Chapel Hill, 1998
  • BA, University of North Carolina at Chapel Hill, 1994
  • District of Columbia
  • United States Court of Appeals, Eleventh Circuit, The Honorable Lanier R. Anderson, III

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