Data and Code for: The Anticompetitive Effects of Common Ownership: The Case of Paragraph IV Generic Entry

Principal Investigator(s): View help for Principal Investigator(s) Jin Xie, The Chinese University of Hong Kong

Name	File Type	Size	Last Modified
Code.txt	text/plain	2.2 KB	10/12/2020 09:35:AM
DATA.dta	application/x-stata	253 KB	08/24/2020 12:46:PM
README.txt	text/plain	135 bytes	08/24/2020 12:43:PM

Project Citation:

Xie, Jin. Data and Code for: The Anticompetitive Effects of Common Ownership: The Case of Paragraph IV Generic Entry. Nashville, TN: American Economic Association [publisher], 2020. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2020-10-12. https://doi.org/10.3886/E120742V1

Project Description

Summary: Brand-name pharmaceutical companies often file lawsuits against generic drug manufacturers that challenge the monopoly status of patent-protected drugs. Institutional horizontal shareholdings, measured by the generic shareholders' ownership in the brand-name company relative to their ownership in the generic manufacturer, are significantly positively associated with the likelihood that the two parties enter into a settlement agreement in which the brand pays the generic manufacturer to stay out of the market.

Funding Sources: Hong Kong Research Grants Council. General Research Fund (14507416)

Scope of Project

Subject Terms: Common ownership; Settlement agreement; Pharmaceutical industry; Patent infringement lawsuit; Antitrust

JEL Classification:
      G23 Pension Funds; Non-bank Financial Institutions; Financial Instruments; Institutional Investors
      G30 Corporate Finance and Governance: General
      L12 Monopoly; Monopolization Strategies
      L41 Monopolization; Horizontal Anticompetitive Practices

Geographic Coverage: United States

Time Period(s): 11/1/2003 – 8/30/2017

Collection Date(s): 7/1/2015 – 10/31/2019

Universe: Pharmaceutical firms in the United States, 2003-2017
Institutional Investors in the United States, 2000-2017

Data Type(s): administrative records data

Methodology

Sampling: Our data come from The Paragraph Four Report, which is an electronic publication of Parry Ashford Inc. The company tracks and analyzes Paragraph~IV activities. The database starts with Paragraph~IV cases that were active as of November 1, 2003. Active branded products are those that had a Paragraph~IV challenge, had a pending lawsuit, and were not available as a generic as of November 1, 2003. The company followed each case through completion (i.e., settlement or court of appeals). Once a generic product enters the market after final termination of litigation, the product is removed from the list and sent to the Old Cases section. The Old Cases section includes products and cases closed after November 1, 2003.

Data Source: The Paragraph Four Report, which is an electronic publication of Parry Ashford Inc.

Collection Mode(s): other; web scraping

Unit(s) of Observation: Paragraph IV Lawsuit

Geographic Unit: Lawsuit

Related Publications

Download this project

Published Versions

V1 [2020-10-12]

Export Metadata

Dublin Core

DDI 2.5

Report a Problem

Found a serious problem with the data, such as disclosure risk or copyrighted content? Let us know.

This material is distributed exactly as received from the data depositor. As of April 2026, depositors are required to submit study materials in accessible formats. ICPSR has not reviewed, checked, or processed this material. For additional information about the study, please contact the investigator(s) directly. If you have questions about the accessibility of materials distributed by ICPSR or require further assistance, please visit ICPSR's Accessibility Center.