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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119

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 1,393 (12,880)

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 1,272 (14,788)
Citation 3

Abstract:

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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 1,249 (15,258)
Citation 4

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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 1,101 (18,493)
Citation 15

Abstract:

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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 1,037 (20,154)
Citation 45

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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 970 (22,334)
Citation 2

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 796 (29,566)
Citation 4

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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 700 (35,229)
Citation 9

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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 699 (35,296)
Citation 10

Abstract:

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Antitrust, Market Delineation, Mergers

10.

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 676 (36,991)
Citation 18

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

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 676 (36,417)
Citation 4

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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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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 671 (37,351)
Citation 4

Abstract:

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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 638 (39,888)
Citation 7

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 573 (46,020)

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 551 (48,373)

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 510 (53,336)
Citation 7

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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 488 (56,388)
Citation 6

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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 435 (64,960)
Citation 9

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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 423 (67,193)

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horizontal mergers, retailing, rental car industry

20.
Downloads 366 ( 76,717)
Citation 25

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 (79,046)
Citation 20

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 370 (78,695)

Abstract:

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antitrust, predation, airlines

22.

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 364 (80,211)

Abstract:

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Antitrust Policy, Brandeis, Consumer Welfare, Chicago School

23.

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 (85,659)

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antitrust, merger, Nash Equilibrium, merger remedy, oligopoly

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 (101,796)
Citation 10

Abstract:

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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 285 (105,277)
Citation 8

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 283 (106,076)
Citation 2

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 (116,419)
Citation 1

Abstract:

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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 255 (118,326)
Citation 1

Abstract:

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antitrust, mergers, merger retrospectives, natural experiments

29.

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 211 (142,662)
Citation 1

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

30.

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 202 (148,603)
Citation 3

Abstract:

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mergers, antitrust, retrospectives

31.

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 197 (152,897)
Citation 6

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antitrust, cartels, recidivism

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 175 (169,378)

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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 123 (226,065)

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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 67 (333,185)

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 (487,241)

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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