Gregory J. Werden

U.S. Department of Justice - Antitrust Division

Senior Economic Counsel

450 Fifth Street, NW

9th Floor

Washington, DC 20530

United States

SCHOLARLY PAPERS

36

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CITATIONS
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118

Scholarly Papers (36)

1.

Unilateral Competitive Effects of Horizontal Mergers

Handbook of Antitrust Economics, 2006
Number of pages: 95 Posted: 22 Oct 2006
Gregory J. Werden and Luke M. Froeb
U.S. Department of Justice - Antitrust Division and Vanderbilt University - Owen Graduate School of Management
Downloads 1,387 (12,708)
Citation 29

Abstract:

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antitrust, mergers, unilateral effects

2.

Why (Ever) Define Markets? An Answer to Professor Kaplow

Number of pages: 21 Posted: 14 Feb 2012
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 1,256 (14,823)
Citation 2

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antitrust, relevant market, market delineation

3.

Essays on Consumer Welfare and Competition Policy

Number of pages: 34 Posted: 02 Mar 2009 Last Revised: 15 May 2009
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 1,232 (15,283)
Citation 1

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antitrust, competition policy, consumer welfare

4.

The Effect of Antitrust Policy on Consumer Welfare: What Crandall and Winston Overlook

U.S. Department of Justice Antitrust Division Discussion Paper No. EAG 03-2
Number of pages: 9 Posted: 01 Apr 2003
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 1,095 (18,268)
Citation 18

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5.

Unilateral Competitive Effects of Horizontal Mergers I: Basic Concepts and Models

Issues in Competition Law and Policy, 2008
Number of pages: 23 Posted: 22 Oct 2006 Last Revised: 05 Jan 2010
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 1,026 (20,107)

Abstract:

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antitrust, mergers, unilateral effects

6.

Don't Panic: A Guide to Claims of Increasing Concentration

Antitrust Magazine, Forthcoming, Vanderbilt Owen Graduate School of Management Research Paper No. 3156912
Number of pages: 11 Posted: 16 Apr 2018 Last Revised: 22 Oct 2018
Gregory J. Werden and Luke M. Froeb
U.S. Department of Justice - Antitrust Division and Vanderbilt University - Owen Graduate School of Management
Downloads 921 (23,596)

Abstract:

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concentration, competition, antitrust, mergers

7.

Antitrust's Rule of Reason: Only Competition Matters

Number of pages: 54 Posted: 03 Mar 2013 Last Revised: 25 Feb 2014
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 788 (29,466)

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antitrust, rule of reason, consumer welfare, Robert Bork

8.

Behavioral Antitrust and Merger Control

Journal of Institutional and Theoretical Economics, 2011, Vol. 167, No. 1, pp. 126-142, Vanderbilt Law and Economics Research Paper No. 10-14
Number of pages: 17 Posted: 20 May 2010 Last Revised: 20 Nov 2012
Gregory J. Werden, Luke M. Froeb and Mikhael Shor
U.S. Department of Justice - Antitrust Division, Vanderbilt University - Owen Graduate School of Management and University of Connecticut Department of Economics
Downloads 698 (34,753)
Citation 4

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Behavioral Economics, Antitrust, Mergers

9.

Beyond Critical Loss: Tailoring Applications of the Hypothetical Monopolist Paradigm

US DOJ Antitrust Division Economic Analysis Group Discussion Paper No. 02-9
Number of pages: 11 Posted: 15 Oct 2002
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 695 (34,958)
Citation 3

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Antitrust, Market Delineation, Mergers

Economic Analysis of Lost Profits from Patent Infringement with and Without Noninfringing Substitutes

American Intellectual Property Law Association Quarterly Journal, Vol. 27, pp. 305-333, 1999
Number of pages: 21 Posted: 01 May 2000
Gregory J. Werden, Luke M. Froeb and Lucian Wayne Beavers
U.S. Department of Justice - Antitrust Division, Vanderbilt University - Owen Graduate School of Management and Waddey and Patterson
Downloads 671 (36,134)
Citation 1

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Economic Analysis of Lost Profits from Patent Infringement with and Without Noninfringing Substitutes

Vanderbilt Law School, Joe C. Davis Working Paper No. 99-9
Posted: 06 Aug 2001
Gregory J. Werden, Luke M. Froeb and Lucian Wayne Beavers
U.S. Department of Justice - Antitrust Division, Vanderbilt University - Owen Graduate School of Management and Waddey and Patterson

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11.

Patent Hold Up and Antitrust: How a Well-Intentioned Rule Could Retard Innovation

Journal of Industrial Economics 60(2), pp. 249-273, June 2012
Number of pages: 26 Posted: 11 Feb 2009 Last Revised: 22 Oct 2014
Luke M. Froeb, Bernhard Ganglmair and Gregory J. Werden
Vanderbilt University - Owen Graduate School of Management, ZEW – Leibniz Centre for European Economic Research - Junior Research Group Competition and Innovation and U.S. Department of Justice - Antitrust Division
Downloads 667 (36,975)

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patent hold-up, option contract, reasonable and nondiscriminatory royalties (RAND), antitrust

12.

Monopsony and the Sherman Act: Consumer Welfare in a New Light

Number of pages: 33 Posted: 31 Mar 2007
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 662 (37,358)
Citation 4

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antitrust, monopsony, welfare

13.

Market Delineation Algorithms Based on the Hypothetical Monopolist Paradigm

US DOJ Antitrust Division Economic Analysis Group Discussion Paper No. 02-8
Number of pages: 25 Posted: 15 Oct 2002
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 634 (39,532)
Citation 1

Abstract:

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Antitrust, Market Delineation, Mergers

14.

Choosing Among Tools for Assessing Unilateral Merger Effects

Vanderbilt Law and Economics Research Paper No. 11-19
Number of pages: 28 Posted: 06 Apr 2011 Last Revised: 20 Nov 2012
Gregory J. Werden and Luke M. Froeb
U.S. Department of Justice - Antitrust Division and Vanderbilt University - Owen Graduate School of Management
Downloads 569 (45,612)
Citation 4

Abstract:

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unilateral effects, mergers, UPP, merger simulation

15.

The Admissibility of Expert Testimony

Issues in Competition Law and Policy, 2008
Number of pages: 17 Posted: 13 Jan 2007 Last Revised: 05 Jan 2010
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 547 (47,976)
Citation 2

Abstract:

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Daubert, expert testimony

16.

Pass-Through Rates and the Price Effects of Mergers

Number of pages: 23 Posted: 13 Jul 2001
Luke M. Froeb, Steven Tschantz and Gregory J. Werden
Vanderbilt University - Owen Graduate School of Management, Vanderbilt University - Department of Mathematics and U.S. Department of Justice - Antitrust Division
Downloads 505 (53,067)
Citation 10

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Pass-through, merger, efficiencies, Bertrand, antitrust

17.

The Effects of Merger Synergies on Consumers of Differentiated Products

Vanderbilt Law and Economics Research Paper No. 01-9
Number of pages: 20 Posted: 01 Aug 2001
Gregory J. Werden, Luke M. Froeb and Steven Tschantz
U.S. Department of Justice - Antitrust Division, Vanderbilt University - Owen Graduate School of Management and Vanderbilt University - Department of Mathematics
Downloads 487 (55,526)
Citation 3

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18.

Calibrated Economic Models Add Focus, Accuracy, and Persuasiveness to Merger Analysis

THE PROS AND CONS OF MERGER CONTROL: 10th ANNIVERSARY OF THE SWEDISH COMPETITION AUTHORITY, Swedish Competition Authority, ed., Swedish Competition Authority, Stockholm, 2002
Number of pages: 22 Posted: 16 Dec 2002
Gregory J. Werden and Luke M. Froeb
U.S. Department of Justice - Antitrust Division and Vanderbilt University - Owen Graduate School of Management
Downloads 431 (64,581)
Citation 7

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19.

Predicting Price Effects from Retail Mergers

Vanderbilt Owen Graduate School of Management Research Paper No. 2034464
Number of pages: 15 Posted: 04 Apr 2012 Last Revised: 24 Aug 2013
Competition Economics LLC, Vanderbilt University - Owen Graduate School of Management, U.S. Department of Justice - Antitrust Division and Western Kentucky University - Department of Economics
Downloads 420 (66,618)

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horizontal mergers, retailing, rental car industry

20.
Downloads 366 ( 75,429)
Citation 17

Post-Merger Product Repositioning

Vanderbilt Law & Economics Working Paper No. 05-19
Number of pages: 20 Posted: 28 Jul 2005
University of Chicago - Booth School of Business, Vanderbilt University - Owen Graduate School of Management, Vanderbilt University - Department of Mathematics and U.S. Department of Justice - Antitrust Division
Downloads 366 (77,656)
Citation 17

Abstract:

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antitrust, game theory, economic modeling

21.

The American Airlines Decision: Not with a Bang But a Whimper

U.S. Department of Justice Antitrust Division Working Paper No. EAG 03-8
Number of pages: 13 Posted: 28 Oct 2003
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 369 (77,578)
Citation 1

Abstract:

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antitrust, predation, airlines

22.

Incentive Contracts as Merger Remedies

Vanderbilt Law and Economics Research Paper No. 05-27
Number of pages: 12 Posted: 21 Oct 2005
Gregory J. Werden, Luke M. Froeb and Steven Tschantz
U.S. Department of Justice - Antitrust Division, Vanderbilt University - Owen Graduate School of Management and Vanderbilt University - Department of Mathematics
Downloads 344 (84,217)

Abstract:

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antitrust, merger, Nash Equilibrium, merger remedy, oligopoly

23.

Back to School: What the Chicago School and New Brandeis School Get Right

Number of pages: 13 Posted: 07 Oct 2018 Last Revised: 10 Oct 2018
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 322 (90,697)

Abstract:

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Antitrust Policy, Brandeis, Consumer Welfare, Chicago School

24.

Vertical Restraints and the Effects of Upstream Horizontal Mergers

THE POLITICAL ECONOMY OF ANTITRUST, Vivek Ghosal and Johann Stennek, eds., North-Holland Publishing, 2006, Vanderbilt Law and Economics Research Paper No. 06-13
Number of pages: 18 Posted: 21 Jul 2006
Luke M. Froeb, Steven Tschantz and Gregory J. Werden
Vanderbilt University - Owen Graduate School of Management, Vanderbilt University - Department of Mathematics and U.S. Department of Justice - Antitrust Division
Downloads 294 (100,124)
Citation 5

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vertical restraints, pass-through, mergers, retailing

25.

Unilateral Competitive Effects of Horizontal Mergers Ii: Auctions and Bargaining

ABA Antitrust Section, Issues in Competition Law and Policy
Number of pages: 15 Posted: 15 Jan 2007 Last Revised: 20 Nov 2012
Gregory J. Werden and Luke M. Froeb
U.S. Department of Justice - Antitrust Division and Vanderbilt University - Owen Graduate School of Management
Downloads 283 (104,310)
Citation 2

Abstract:

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mergers, auctions, bargaining

26.

The Relevant Market: Possible and Productive

Number of pages: 8 Posted: 12 Apr 2014 Last Revised: 11 Dec 2014
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 280 (105,476)

Abstract:

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antitrust, relevant market

27.

The Effects of Merger Efficiencies on Consumers of Differentiated Products

European Competition Journal, Vol. 1, No. 2, October 2005
Number of pages: 25 Posted: 22 Oct 2006
Gregory J. Werden, Luke M. Froeb and Steven Tschantz
U.S. Department of Justice - Antitrust Division, Vanderbilt University - Owen Graduate School of Management and Vanderbilt University - Department of Mathematics
Downloads 259 (114,530)
Citation 3

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mergers, efficiencies, pass through

28.

Inconvenient Truths on Merger Retrospective Studies

Number of pages: 20 Posted: 07 Jan 2015 Last Revised: 25 Mar 2015
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 251 (118,303)

Abstract:

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antitrust, mergers, merger retrospectives, natural experiments

29.

Inconvenient Truths and Constructive Suggestions on Merger Retrospective Studies

Number of pages: 9 Posted: 02 Jul 2013
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 201 (146,921)

Abstract:

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mergers, antitrust, retrospectives

30.

Recidivism Eliminated: Cartel Enforcement in the United States Since 1999

Number of pages: 7 Posted: 16 Sep 2011
Gregory J. Werden, Scott D. Hammond and Belinda A. Barnett
U.S. Department of Justice - Antitrust Division, U.Department of Justice - Antitrust Division and U.S.Department of Justice - Antitrust Division
Downloads 195 (151,147)
Citation 1

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antitrust, cartels, recidivism

31.

Why Patent Hold-Up Does Not Violate Antitrust Law

Number of pages: 34 Posted: 24 Sep 2018
Gregory J. Werden and Luke M. Froeb
U.S. Department of Justice - Antitrust Division and Vanderbilt University - Owen Graduate School of Management
Downloads 190 (154,801)

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Antitrust, Patents, Standard Essential Patents, Patent Hold-Up

32.

Mergers with Weak Competition: Reflections on FTC v. Lundbeck

Number of pages: 3 Posted: 22 Feb 2012
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 174 (167,463)

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mergers, antitrust, duopoly, pharmaceutical pricing

33.

Establishment of the Antitrust Division of the U.S. Department of Justice

St. John's Law Review , Forthcoming
Number of pages: 11 Posted: 19 Aug 2018 Last Revised: 24 Nov 2018
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 115 (233,896)

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Antitrust, Antitrust Division, History

34.

Unilateral Effects with Differentiated Consumer Products: A Response to Scheffman and Simons

The Antitrust Source, p. 1, June 2010
Number of pages: 6 Posted: 16 Jul 2010
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 64 (336,016)

Abstract:

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Antitrust, Mergers

35.

Textualism and Section 2 of the Sherman Act: A Clear Path the Supreme Court Did Not Take

Number of pages: 41 Posted: 12 Jan 2018 Last Revised: 16 Apr 2018
Gregory J. Werden
U.S. Department of Justice - Antitrust Division
Downloads 25 (479,431)

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Sherman Act, monopolization, textualism

36.

Next Steps in the Evolution of Antitrust Law: What to Expect from the Roberts Court

Journal of Competition Law and Economics, Vol. 5, Issue 1, pp. 49-74, 2009
Posted: 17 Mar 2009
Gregory J. Werden
U.S. Department of Justice - Antitrust Division

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K21, L41