This paper addresses the relationship between patent protection and investment in the development of new pharmaceutical … Trade Organization, has increased levels of patent protection around the world. Since patents also have the potential to … patent laws and the severity of disease, we test the hypothesis that increased patent protection results in greater drug …

incentives to litigate in defence of a patent and, thus, the prospects of infringement and the effective protection of the … innovator. We compare the resort to a financier once the infringement has occurred (ex-post financing) with patent litigation …-best outcome: a situation in which patent predation is deterred without inducing excessive litigation. …

Post-grant validity challenges at patent offices rely on the private initiative of third parties to correct mistakes … made by patent offices. We hypothesize that incentives to bring post-grant validity challenges are reduced when many firms … benefit from revocation of a patent and when firms are caught up in patent thickets. Using data on opposition against patents …