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Post-Issue Patent "Quality Control": A Comparative Study of US Patent Re-examinations and European Patent Oppositions
Graham, Stuart J.H.; Hall, Bronwyn H; Harhoff, Dietmar; … - National Bureau of Economic Research (NBER) - 2002
We report the results of the first comparative study of the determinants and effects of patent oppositions in Europe and of re-examinations on corresponding patents issued in the United States. The analysis is based on a dataset consisting of matched EPO and US patents. Our analysis focuses on...
Persistent link: https://www.econbiz.de/10005830344
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Separating patent wheat from chaff: Would the US benefit from adopting patent post-grant review?
Graham, Stuart J.H.; Harhoff, Dietmar - In: Research Policy 43 (2014) 9, pp. 1649-1659
This article assesses the impact in the US of adopting a patent post-grant review (PGR) procedure similar to one provided in the America Invents Act (AIA) of 2011. We employ novel methods for matching US patents to their European counterparts to find that opposition rates are about three times...
Persistent link: https://www.econbiz.de/10010930885
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Can Post-Grant Reviews Improve Patent System Design? A Twin Study of US and European Patents
Graham, Stuart J.H.; Harhoff, Dietmar - 2006
This paper assesses the impact of adopting a post-grant review institution in the US patent system by comparing the 'opposition careers' of European Patent Office (EPO) equivalents of litigated US patents to those of a control group of EPO patents. We demonstrate several novel methods of...
Persistent link: https://www.econbiz.de/10010333818
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Post-Issue Patent “Quality Control:†A Comparative Study of US Patent Re-examinations and European Patent Oppositions
Graham, Stuart J.H.; Hall, Bronwyn H.; Harhoff, Dietmar; … - Institute of Business and Economic Research (IBER), … - 2002
We report the results of the first comparative study of the determinants and effects of patent oppositions in Europe and of re-examinations on corresponding patents issued in the United States. The analysis is based on a dataset consisting of matched EPO and US patents. Our analysis focuses on...
Persistent link: https://www.econbiz.de/10010538432
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Can Post-Grant Reviews Improve Patent System Design? A Twin Study of US and European Patents
Graham, Stuart J.H.; Harhoff, Dietmar - Volkswirtschaftliche Fakultät, … - 2006
This paper assesses the impact of adopting a post-grant review institution in the US patent system by comparing the “opposition careers†of European Patent Office (EPO) equivalents of litigated US patents to those of a control group of EPO patents. We demonstrate several novel methods...
Persistent link: https://www.econbiz.de/10005785874
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Prospects for Improving U.S. Patent Quality via Post-grant Opposition
Hall, Bronwyn H; Graham, Stuart J.H.; Harhoff, Dietmar - National Bureau of Economic Research (NBER) - 2003
The recent surge in U.S. patenting and expansion of patentable subject matter has increased patent office backlogs and raised concerns that in some cases patents of insufficient quality or with inadequate search of prior art are being issued. At the same time patent litigation and its costs are...
Persistent link: https://www.econbiz.de/10005085013
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Prospects for Improving U.S. Patent Quality via Postgrant Opposition
Hall, Bronwyn H; Graham, Stuart J.H.; Harhoff, Dietmar; … - In: Innovation Policy and the Economy, Volume 4
Persistent link: https://www.econbiz.de/10005073395
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Can Post-Grant Reviews Improve Patent System Design? A Twin Study of US and European Patents
Graham, Stuart J.H.; Harhoff, Dietmar - C.E.P.R. Discussion Papers - 2006
This paper assesses the impact of adopting a post-grant review institution in the US patent system by comparing the “opposition careers” of European Patent Office (EPO) equivalents of litigated US patents to those of a control group of EPO patents. We demonstrate several novel methods of...
Persistent link: https://www.econbiz.de/10005666881
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PROSPECTS FOR IMPROVING U.S. PATENT QUALITY VIA POST-GRANT OPPOSITION
Hall, Bronwyn H.; Graham, Stuart J.H.; Harhoff, Dietmar; … - 2003
Persistent link: https://www.econbiz.de/10006968693
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POST-ISSUE PATENT "QUALITY CONTROL": - A COMPARATIVE STUDY OF US PATENT RE-EXAMINATIONS AND EUROPEAN PATENT OPPOSITIONS
Graham, Stuart J.H.; Hall, Bronwyn H.; Harhoff, Dietmar; … - 2002
Persistent link: https://www.econbiz.de/10006975065