Reference health
Patent Duration, Breadth and Costly Imitation: Evidence from the US Pharmaceutical Market
25/25 checkable references clean · checked 2026-08-27
Every reference with a DOI in the deposited reference list resolved to a known work in Crossref or DataCite at the dated check, and none carried a retraction, withdrawal, or removal notice.
26 without a DOI — not checked. A reference deposited without a DOI is never matched by title or guessed at; it stays outside the checked set, and this line discloses that.
The 25 checked references that resolve
resolves10.2139/ssrn.1443412
Did TRIPS Spur Innovation? An Empirical Analysis of Patent Duration and Incentives to Innovate
resolves10.1162/0033553041502144
Market Size in Innovation: Theory and Evidence from the Pharmaceutical Industry
resolves10.1257/aer.20131176
Do Firms Underinvest in Long-Term Research? Evidence from Cancer Clinical Trials
resolves10.1257/aer.20141301
The Market Impacts of Pharmaceutical Product Patents in Developing Countries: Evidence from India
resolves10.1257/aer.99.2.343
The Empirical Impact of Intellectual Property Rights on Innovation: Puzzles and Clues
resolves10.1016/j.jeconom.2007.05.005
Manipulation of the running variable in the regression discontinuity design: A density test
resolves10.2307/2696399
Do Stronger Patents Induce More Innovation? Evidence from the 1988 Japanese Patent Law Reforms
resolves10.1198/073500102288618658
A Survey of Weak Instruments and Weak Identification in Generalized Method of Moments
The 26 references without a DOI — listed, not checked
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no DOI — not checkedCompetition between generic and branded drugs
no DOI — not checkedThe distribution of sales revenues from pharmaceutical innovation
no DOI — not checkedWhen do generics challenge drug patents?
no DOI — not checkedEarning Exclusivity: Generic Drug Incentives and the Hatch-Waxman Act
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no DOI — not checkedCharacteristics of patent litigation: A window on competition
no DOI — not checkedLanjouw and Mark Schankerman Patent Quality and Research Productivity: Measuring Innovation with Multiple Indicators
no DOI — not checkedExaminer characteristics and patent oce outcomes
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no DOI — not checkedThe optimum life of a patent: Reply
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no DOI — not checkedThe US Department of Health and Human Services, Food and Drug Administration, Center for Drug Evaluation and Research. Guidance for industry -180-day exclusivity when multiple ANDAs are submitted on the same day
no DOI — not checkedFood and Drug Administration, Center for Drug Evaluation and Research. Guidance for industry -Listed drugs, 30-month stays, and approval of ANDAs and 505(b)(2) applications under HatchWaxman, as amended by the Medicare Prescription Drug, Improvement, and Modernization Act of
no DOI — not checkedOn the optimal patent policy
no DOI — not checkedRevitalizing the patent system to incentives pharmaceutical innovation: the potential claims with means-plus-function clauses
no DOI — not checkedThe economics of product patents
no DOI — not checkedGeneric competition and pharmaceutical innovation: The Drug Price Competition and Patent Term Restoration Act of 1984
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