Polymorphs and Prodrugs and Salts (Oh My!): An Empirical Analysis of “Secondary” Pharmaceutical Patents

• Amy Kapczynski ,

  Contributed equally to this work with: Amy Kapczynski, Chan Park, Bhaven Sampat

  Affiliation Yale Law School, Yale University, New Haven, Connecticut, United States of America

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• Chan Park ,

  Contributed equally to this work with: Amy Kapczynski, Chan Park, Bhaven Sampat

  Affiliation Medicines Patent Pool, Geneva, Switzerland

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• Bhaven Sampat

  Contributed equally to this work with: Amy Kapczynski, Chan Park, Bhaven Sampat

  * E-mail: bns3@columbia.edu

  Affiliation Department of Health Policy and Management, Mailman School of Public Health, Columbia University, New York, New York, United States of America

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