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16 J. Intell. Prop. 35 (2008-2009)
On the Continuing Misuse of Event Studies: The Example of Bessen and Meurer

handle is hein.journals/intpl16 and id is 36 raw text is: ON THE CONTINUING MISUSE OF EVENT
STUDIES: THE EXAMPLE OF BESSEN AND
MEURER
Glynn S. Lannry, Jr.*
TABLE OF CONTENTS
I.  INTRODUCTION   ............................................  36
II. How WE GOT HERE: A BRIEF HISTORY OF EVENT STUDIES ....... 38
III. PATENT LITIGATION AND EVENT STUDIES: THE PROZAC
EXAM PLE  .................................................  44
A. VALUING THE PROZAC PATENT: TRADITIONAL
TECHNIQUES  ............................................  45
B. VALUING THE PROZAC PATENT: EVENT STUDY
METHODOLOGY    .........................................  46
1.  Background Facts  .......................................  46
2. Abnormal and Cumulative Abnormal Returns ................... 47
3.  Preh'minay A nalysis  .....................................  48
4.  M agnitude of  the Loss  .................................... 48
C. WHAT A DIFFERENCE THE DIFFERENCE MAKES ................ 49
IV. EXPLAINING THE OVERREACTION: WHAT Do EVENT STUDIES
T ELL  U S?  ..................................................  50
V. WITHOUT THE EVENT STUDY, WHAT'S LEFT? .................... 54

* McGlinchey Stafford Professor of Law, Tulane University School of Law.

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