'opposition careers' of European Patent Office (EPO) equivalents of litigated US patents to those of a control group of EPO … more likely to be awarded EPO patent protection than are equivalents of unlitigated patents, and the opposition rate for … attacked under European opposition are shown to be either revoked completely or narrowed in about 70 percent of all cases. For …

awarded EPO patent protection than are equivalents of unlitigated patents, and the opposition rate for EPO equivalents of US … opposition are shown to be either revoked completely or narrowed in about 70 percent of all cases. For EPO equivalents of US … litigated patents, the appeal rate against opposition outcomes is considerably higher than for control-group patents. Based on …

'opposition careers' of European Patent Office (EPO) equivalents of litigated US patents to those of a control group of EPO … more likely to be awarded EPO patent protection than are equivalents of unlitigated patents, and the opposition rate for … attacked under European opposition are shown to be either revoked completely or narrowed in about 70 percent of all cases. For …

benefit from revocation of a patent and when firms are caught up in patent thickets. Using data on opposition against patents … at the European Patent Office we show that opposition decreases in fields in which many others profit from patent … revocations. Moreover, in fields with a large number of mutually blocking patents the incidence of opposition is sharply reduced …

benefit from revocation of a patent and when firms are caught up in patent thickets. Using data on opposition against patents … at the European Patent Office we show that opposition decreases in fields in which many others profit from patent … revocations. Moreover, in fields with a large number of mutually blocking patents the incidence of opposition is sharply reduced …

oppositions were filed at the EPO. We also construct a random sample of EPO patents with no opposition in these technologies. We … matched sample of USPTO and EPO patents, we compare the determinants of opposition and of reexamination. Our results indicate … that valuable patents are more likely to be challenged in both jurisdictions. But the rate of opposition at the EPO is more …

. At the same time patent litigation and its costs are rising. This paper explores the potential of a post-grant review … process modeled on the European opposition system to improve patent quality, reveal overlooked prior art, and reduce … subsequent litigation. We argue that the welfare gains to such a system may be substantial. …

. At the same time patent litigation and its costs are rising. This paper explores the potential of a post-grant review … process modeled on the European opposition system to improve patent quality, reveal overlooked prior art, and reduce … subsequent litigation. We argue that the welfare gains to such a system may be substantial. …

oppositions were filed at the EPO. We also construct a random sample of EPO patents with no opposition in these technologies. We … matched sample of USPTO and EPO patents, we compare the determinants of opposition and of reexamination. Our results indicate … that valuable patents are more likely to be challenged in both jurisdictions. But the rate of opposition at the EPO is more …