Nathan Castellano advises clients on all aspects of doing business with and litigating against the federal government. His experience includes: bid protests, contract disputes, False Claims Act litigation, FOIA, Foreign Military Sales, Buy American & Trade Agreement Acts, suspension and debarment, general contract and grant compliance, audits, teaming agreements, subcontracting, small business issues, cost accounting, data rights and intellectual property, and fiscal law.

Mr. Castellano studied procurement law extensively at the George Washington University Law School, working as a research assistant to Professor Steven Schooner and graduating as a Murray Schooner Procurement Scholar. Prior to joining the firm, he clerked for the Honorable Jimmie V. Reyna at the United States Court of Appeals for the Federal Circuit and worked as a legal consultant in the World Bank Office of Suspension and Debarment (OSD). He is a widely published author, with articles cited in leading treatises and used as course material.

Perspectives

Fed. Circ. Ruling Highlights Bid Protester Standing Issues
Aerospace & Defense Law360, Appellate Law360, Government Contracts Law360, Health Law360, Technology Law360
Palantir: Federal Circuit Confirms Agencies' Obligations to Prioritize Commercial Solutions
Advisory
What To Expect From OTA Protests And Disputes
Aerospace & Defense Law360, Government Contracts Law360
Fed. Circ. Clarifies Infringement Liability For Contractors
Aerospace & Defense Law360, Appellate Law360, Government Contracts Law360, Intellectual Property Law Law360
Other Transactions Authority (OTA): Protests and Disputes
Advisory
More

Credentials

Education
  • JD, George Washington University Law School, 2015, highest honors, Order of the Coif
  • BA, Roanoke College, 2012, magna cum laude
Admissions
  • District of Columbia
  • US Court of Federal Claims
  • US Court of Appeals for the Federal Circuit
Clerkships
  • United States Court of Appeals, Federal Circuit, The Honorable Jimmie V. Reyna
Activities
  • Adjunct Professor, The George Washington University Law School
Overview

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