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Nathaniel Castellano

Freshfields US LLP

700 13th Street NW

Washington, DC 20005

United States

George Washington University - Law School

2000 H Street, N.W.

Washington, DC 20052

United States

  • Freshfields US LLP

  • George Washington University - Law School

SCHOLARLY PAPERS

31

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2,485

TOTAL CITATIONS
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Top 168,559

in Total Papers Citations

3

Scholarly Papers (31)

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1.

Review Essay: Reading the Dream Machine: The Untold Story of the Notorious V-22 Osprey, by Richard Whittle, in Light of the Defense Acquisition Performance Study

Vol. 43, No. 3 Public Contract Law Journal 391 (Spring 2014), GWU Law School Public Law Research Paper No. 2014-14, GWU Legal Studies Research Paper No. 2014-14
Number of pages: 33 Posted: 02 May 2014
Steven L. Schooner and Nathaniel Castellano
George Washington University - Law School and Freshfields US LLP
Downloads 478 (148,764)

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government contracts, public procurement, defense acquisition, procurement spending, performance measures, acquisition metrics, program management, appropriations, tiltrotor, boeing, bell, V-22 Osprey, Marines, Air Force

2.

Reinvigorating Innovation: Lessons Learned from the Wright Brothers

Contract Management, Volume 56, Page 46 (April 2016), GWU Law School Public Law Research Paper No. 2016-8, GWU Legal Studies Research Paper No. 2016-8
Number of pages: 11 Posted: 06 Apr 2016
Steven L. Schooner and Nathaniel Castellano
George Washington University - Law School and Freshfields US LLP
Downloads 230 (333,232)

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innovation, wright brothers, prizes, contests, challenges, public procurement, defense acquisition, better buying power, research and development, fly before you buy, risk

3.

'Other Transactions' Are Government Contracts, And Why It Matters

Public Contract Law Journal, Vol. 48, No. 3, Spring 2019
Number of pages: 30 Posted: 13 Aug 2019 Last Revised: 17 Jun 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 219 (351,440)
Citation 1

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Government Contracts; Other Transactions; OTA; Federal Circuit

4.

Suspensions, Debarments, and Sanctions: A Comparative Guide to United States and World Bank Exclusion Mechanisms

Public Contract Law Journal, Vol. 45, No. 3, Pp. 403-448, 2016
Number of pages: 46 Posted: 08 Jul 2016 Last Revised: 22 Feb 2017
Nathaniel Castellano
Freshfields US LLP
Downloads 172 (444,808)

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Suspension; Debarment; Sanction; World Bank; Office of Suspension and Debarment; OSD; Public Procurement; Government Contracts; Anti-Corruption

5.

Dawn of the Intercontinental Sniper: The Drone's Cascading Contribution to the Modern Battlefield's Complexity: A Review Essay of Predator: The Secret Origins of the Drone Revolution, by Richard Whittle

8 Journal of National Security Law & Policy 321 (2016) , GWU Law School Public Law Research Paper No. 2015-39, GWU Legal Studies Research Paper No. 2015-39
Number of pages: 15 Posted: 04 Oct 2015 Last Revised: 19 Apr 2016
Steven L. Schooner and Nathaniel Castellano
George Washington University - Law School and Freshfields US LLP
Downloads 165 (456,852)
Citation 1

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public procurement, defense acquisition, unmanned aerial vehicle (UAV), remotely piloted vehicles (RPV), drones, predator, Iraq, Afghanistan, law of war, outsourcing, innovation

6.

Prizes! Innovating, Risk Shifting, and Avoiding Contracts and Grants

The Public Manager, page 33 (Winter 2014), Forum on "Acquisition: Short-Term Tactics and Long-Term Change", GWU Law School Public Law Research Paper No. 2014-58, GWU Legal Studies Research Paper No. 2014-58
Number of pages: 3 Posted: 20 Dec 2014
Steven L. Schooner and Nathaniel Castellano
George Washington University - Law School and Freshfields US LLP
Downloads 162 (461,984)

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contracts, grants, prizes, contests, challenge, gov, innovation, dispute resolution

7.

The World Bank Sanctions System

Briefing Paper No. 17-3
Number of pages: 16 Posted: 02 Mar 2017
Drew Harker and Nathaniel Castellano
Arnold & Porter and Freshfields US LLP
Downloads 155 (482,968)

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8.

Eyes on the Prize, Head in the Sand: Filling the Due Process Vacuum in Federally Administered Contests

24 Federal Circuit Bar Journal 391 (2015), GWU Legal Studies Research Paper No. 2015-5, GWU Law School Public Law Research Paper No. 2015-5
Number of pages: 44 Posted: 26 Mar 2015
Steven L. Schooner and Nathaniel Castellano
George Washington University - Law School and Freshfields US LLP
Downloads 130 (561,789)

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contracts, grants, prizes, contests, challenges, innovation, dispute resolution, bid protests, implied contracts, research and development, unilateral contracts

9.

Suspension and Debarment on the Rise: A Popular Enforcement Tool in the United States

International Bar Association Anti-Corruption Committee Newsletter, Vol. 7 No. 2 (Sept. 2015)
Number of pages: 5 Posted: 11 Apr 2016
Pascale Dubois, Collin D. Swan, Collin D. Swan and Nathaniel Castellano
World Bank - Office of Suspension & Debarment, Office of Suspension and Debarment, The World BankGeorge Washington University - Law School and Freshfields US LLP
Downloads 126 (580,653)

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suspension and debarment, public procurement, government contracts, anti-corruption, exclusion, sanction, integrity

10.

Where the Sunshine Meets the Shade: Using FOIA Exemption 4 to Protect Confidential Compliance Information after the 2016 FOIA Improvement Act

Public Contract Law Journal , Vol. 46, No. 3, Spring 2017
Number of pages: 34 Posted: 17 May 2017
Nathaniel Castellano
Freshfields US LLP
Downloads 104 (679,608)
Citation 1

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11.

Briefing Paper: FOIA Exemption 4

Briefing Papers, June 2017
Number of pages: 16 Posted: 17 Jul 2017
Stuart Turner and Nathaniel Castellano
Arnold & Porter and Freshfields US LLP
Downloads 102 (689,572)

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12.

After Arbaugh: Neither Claim Submission, Certification, Nor Timely Appeal are Jurisdictional Prerequisites to Contract Disputes Act Litigation

Number of pages: 44 Posted: 19 Dec 2017
Nathaniel Castellano
Freshfields US LLP
Downloads 98 (704,534)

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13.

Successful Advocacy in Government Contracts Appeals before the Federal Circuit: Context is Key

Number of pages: 8 Posted: 22 Feb 2017
Jimmie Reyna and Nathaniel Castellano
United States Court of Appeals for the Federal Circuit and Freshfields US LLP
Downloads 94 (725,554)

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14.

Brief of Amici Curiae Professor Steven L. Schooner in Support of Plaintiffs-Appellees and Affirmance in EPA et al. v Green & Healthy Homes Initiative, Inc. et al., (U.S. Fourth Circuit, 25-1808), May 19, 2026.

GWU Legal Studies Research Paper No. 2026-38, GWU Law School Public Law Research Paper No. 2026-38
Number of pages: 35 Posted: 26 May 2026
Steven L. Schooner, David Livshiz, Nathaniel Castellano, Jayna Rust, Catherine Katz and Miguel Serrano
George Washington University - Law School, Freshfields US LLP, Freshfields US LLP, Thompson Coburn LLP, Freshfields US LLP and Freshfields US LLP
Downloads 70 (933,592)

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Government contracts, grants and cooperative agreements, public procurement, administrative law, Administrative Procedure Act, Tucker Act, Federal Grant and Cooperative Agreements Act, Contract Disputes Act, Court of Federal Claims

15.

Year in Review: The Federal Circuit's 2019 Government Contract Law Decisions

American University Law Review, Vol. 69, 2020
Number of pages: 36 Posted: 16 May 2020
Nathaniel Castellano
Freshfields US LLP
Downloads 46 (1,121,190)

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Government Contracts; U.S. Court of Appeals for the Federal Circuit; Procurement Law

16.

Corrective Action And Voluntary Remand: Recent Developments At The GAO And The COFC

The Nash & Cibinic Report, Volume 36, Issue 4, April 2022 
Number of pages: 5 Posted: 13 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 18 (1,526,714)

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federal contracting, public procurement, bid protest, Court of Federal Claims, Government Accountability Office, Voluntary Remand, Corrective Action

17.

Bid Protest Remedies And Remands: New Guidance From The Supreme Court

The Nash and Cibinic Report, Volume 36, Issue 9, September 2022 
Number of pages: 6 Posted: 13 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 16 (1,509,872)

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Government Contracting, Federal Contracts, Public Procurement, Bid Protest, Administrative Law, Litigation Strategy, Defense Contracting, Federal Courts, Federal Circuit, Court of Federal Claims

18.

FOIA Exemption 4 After Argus Leader And The FOIA Improvement Act

Number of pages: 16 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 15 (1,555,090)

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Federal Contracting, Public Procurement, FOIA, Freedom of Information Act, Government Transparency, Open Government, Trade Secrets, Proprietary Information, Defense Contracting, Litigation Strategy, Exemption 4

19.

AFTER CHEVRON: How Might Loper Bright Impact Procurement Law?

The Nash & Cibinic Report, Volume 38, Issue 8, August 2024. 
Number of pages: 8 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 13 (1,534,404)

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US Federal Contracting, Government Contracts, Public Procurement, Chevron deference, Loper Bright, defense contracting

20.

Successful Advocacy in Government Contracts Appeals Before the Federal Circuit: Context is Key

Number of pages: 8 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 9 (1,571,455)

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US Court of Appeals for the Federal Circuit, Appellate Advocacy, National Courts, US Government Contracts, Federal Contracting, Public Procurement, Defense Contrating, Litigation Strategy

21.

FEDERAL CIRCUIT JURISDICTION OVER PROTECTIVE ORDER DISPUTES: Shielding Information vs. Revealing Information

Number of pages: 4 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 8 (1,561,096)

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Bid Protests, Protective Orders, Litigation Strategy, Civil Procedure, Federal Circuit, Court of Federal Claims, Government Accountability Office, Federal Contracting, Proprietary Information, Public Procurement

22.

The CDA "SUM CERTAIN" REQUIREMENT: Federal Circuit Continues Correction Of CDA Jurisdiction

Number of pages: 4 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 7 (1,566,597)

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Contract Disputes Act, CDA, Sum Certain, Litigation Strategy, Government Contracting, Sovereign Immunity, Appellate Advocacy, Public Procurement, Governmental Immunities, Deparmtment of Justice, Federal Circuit, Defense Acquisition, Supreme Court

23.

COMMERCIAL CONTRACTING: Percipient Petitions The Supreme Court

Number of pages: 6 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 7 (1,571,455)

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Supreme Court, Appellate Advocacy, Amicus Curaie, Federal Circuit, Bid Protest, Federal Contracting, Public Procurement, Defense Contracting, Litigation Strategy, Defense Technology, Defense Innovation, Commercial Contracting

24.

PRELIMINARY INJUNCTION BONDS: An Emerging Bid Protest Issue

Number of pages: 4 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 6 (1,571,455)

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Injunction Bond, litigation strategy, bid protest, federal contracting, preliminary injunctions, public procurement, federal courts, civil procedure, defense contracting

25.

INTERESTED PARTY: En Banc Reconsideration Of Bid Protest Standing

Number of pages: 14 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 6 (1,571,455)

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Bid Protest, Litigation Strategy, Federal Courts, Competition in Contracting Act (CICA), Administrative Dispute Resolution Act (ADRA), Appellate advocacy, Federal Circuit, Court of Federal Claims, en banc, commercial contracting, defense acquisition, Federal Acquisition Streamlining Act (FASA), defense innovation, defense technology

26.

GOVERNMENT CONTRACT NOVATION: Overlooked Candidate For "Revolutionary Overhaul"

Number of pages: 4 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 6 (1,579,934)

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M&A, Mergers & Acquisitions, Novation, Change of Control, Government Contracts, Public Procurement, Federal Contracting, Defense Acquisition, Revolutionary FAR Overhaul

27.

Postscript II: Unilateral Definitization Of A Letter Contract Guidance

Number of pages: 4 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 6 (1,571,455)

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Contract Disputes Act, National Defense Authorization Act, Public Procurement, Defense Acquistion, Federal Contracting, Goevrnment Contacting, Litigation strategy

28.

SBIR PROGRAM: GAO Confirms The Value Of Phase III Awards

Number of pages: 4 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 5 (1,575,921)

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Small Business Innovation Research (SBIR), Federal Funding, Federal Contracting, Defense Innovation, Defense Technology, Mergers and Acquisitions (M&A), Public Procurement, Government Accountability Office, Bid Protest, Litigation Strategy, Due Diligence, Proprietary Rights

29.

POSTSCRIPT III: ENHANCED DEBRIEFINGS: A Simple Strategy For A More Manageable Protest Process

Number of pages: 8 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 4 (1,579,934)

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Bid Protest, Litigation Strategy, Enhanced Debriefings, Defense Federal Acquisition Regulation Supplement (DFARS), Public Procurment, Federal Contracting, Government Contracts, Defense Contracting, National Defense Authorization Act

30.

The End of Days for Litigation Over Contract Disputes Act Jurisdiction

Number of pages: 8 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 4 (1,579,934)

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Federal Circuit, Public Procurement, Contract Disputes Act, Litigation Strategy, CDA Claims, Government Contracts, Federal Contracting, Public Procurement

31.

Office Design At The Protest Fora: Window Dressing Or New Rule?

Number of pages: 6 Posted: 20 Apr 2026
Nathaniel Castellano
Freshfields US LLP
Downloads 4 (1,579,934)

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Bid Protests, Public Procurement, Federal Contracting, Government Contracts, Defense Contrating, Court of Federal Claims, Government Accountability Office, Litigation Strategy