John O'Brien

John O’Brien

Of Counsel


Computer Sciences Corporation

B-412163.3, B-412163.4, Jan. 4, 2016, (2016 WL 106073)

XTec, Inc.

B-410778.3 , Oct. 1, 2015, 2015 CPD ¶ 292

Savantage Financial Services, Inc.

B-411647, B-411647.2, Sept. 17, 2015, 2015 CPD ¶ 286

Tantus Technologies, Inc.

B-411608, B- 411608.3, Sept. 14, 2015, 2015 CPD ¶ 299

CPS Professional Services, LLC

B-409811, B-409811.2, August 13, 2014 2014 CPD ¶ 260

Strijder Group K9, LLC

B-409139.2, May 1, 2014, 2014 CPD ¶ 142

General Dynamics Ordnance & Tactical Systems

B-408001, May 13, 2013, 2013 CPD ¶ 121

ESCgov, Inc.

B-407107.2, Oct. 9, 2012

NCS Technologies, Inc.

B-406306.3, Sept. 17, 2012, 2012 CPD ¶ 259

Distributed Solutions, Inc. v. United States

106 Fed. Cl. 1 (2012) PricewaterhouseCoopers LLP, B-40678, Aug. 3, 2012, 2012 CPD ¶ 227

The Clay Group, LLC

B-406647, B-406647.2, Jul. 30, 2012, 2012 CPD ¶ 214

Raytheon Company

B-403110.3, Apr. 26, 2011, 2011 CPD ¶ 96

Technology Concepts & Design, Inc.

B-403949.2, B-403949-3, Mar. 25, 2011, 2011 CPD ¶ 78

Linc Government Services LLC v. United States, et. al.

96 Fed. Cl. 672 (2010)

Calnet, Inc., B-402558.2, et. al.

Je. 3, 2010, 2010 CPD ¶ 130 SOS International, Ltd., B0402558.3, et. al.¸ Je. 3, 2010, 2010 CPD ¶ 131


Published on:

Cordatis protest win snatches victory from the jaws of defeat

A Cordatis team consisting of Daniel Strouse, Pablo Nichols, John O'Brien, Jason Moy, and Rhina Cardenal recently won a post-award protest on behalf of our client ITillity, LLC.
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Cordatis successfully defends the IRS’s award of a BPA award to Allicent Technology, LLC

A Cordatis team consisting of Daniel Strouse and John O'Brien successfully defended the award of an IRS BPA to Allicent Technology, LLC.
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Cordatis wins GAO bid protest for Deloitte Consulting, LLP

A Cordatis team consisting of David Cohen, John O'Brien, Pablo Nichols, and Jason Moy recently won a post-award GAO protest Deloitte Consulting.  
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Cordatis wins GAO protest for Obsidian Global, LLC

A Cordatis team consisting of David Cohen and John O'Brien successfully defended the award of an Air Force contract to Obsidian Global. In its decision, GAO rejected the protestor's arguments and agreed that the Air Force correctly awarded the contract to our client.
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Bid Protests Challenging “Other Transaction Agreement” Procurements

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Should I File a Bid Protest at GAO?

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Grant and Cooperative Agreement Protests: A Changed Landscape

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E-Verify Rules Delayed Again

E-Verify Rules to go into effect September 8, 2009.

Areas of Specialization


University of Virginia (B.S., Commerce, 1981); Marshall Wythe School of Law, College of William & Mary (J.D. 1985).

Bar & Court AdmissionsAdmitted to bar, 1985, Virginia; 1986, Washington, D.C.

Leadership & Community InvolvementU.S. District Court for the Eastern District of Virginia, U.S. Court of Appeals for the Eleventh Circuit, United States Court of Federal Claims, United States Court of Appeals for the Federal Circuit.
Prior Experience1985-1987, Associate, Lewis, Mitchell & Moore; 1987-1990, Associate, Piper & Marbury; 1990-1995, Associate, Arent, Fox, Kintner, Plotkin & Kahn; 1995-1998, Of Counsel, Pompan, Murray, Ruffner & Werfel; 1998-present, Of Counsel, Cohen Mohr.