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Under threat: potential competition, litigation and the private value of patent protection

Lanjouw, Jean Olson - London School of Economics (LSE) - 1992

worth maintaining. The model yields testable predictions about renewal probabilities. Data for post WWII German patents …

Persistent link: https://www.econbiz.de/10010928754

Strategic patenting and software innovation

Noel, Michael; Schankerman, Mark - London School of Economics (LSE) - 2006

Strategic patenting is widely believed to raise the costs of innovating, especially in industries characterised by cumulative innovation. This paper studies the effects of strategic patenting on R&D, patenting and market value in the computer software industry. We focus on two key aspects:...

Persistent link: https://www.econbiz.de/10010744919

Knowledge disclosure, patents and optimal organization of research and development

Bhattacharya, Sudipto; Guriev, Sergei - London School of Economics (LSE) - 2004

We develop a model of two-stage cumulative research and development (R&D), in which one Research Unit (RU) with an innovative idea bargains to license her nonverifiable interim knowledge exclusively to one of two competing Development Units (DUs) via one of two alternative modes: an Open sale...

Persistent link: https://www.econbiz.de/10010745090

How special is the special relationship?: using the impact of R&D spillovers on UK firms as a test of technology sourcing

Griffith, Rachel; Harrison, Rupert; Van Reenen, John - London School of Economics (LSE) - 2004

How much does US-based R&D benefit other countries and through what mechanisms? We test the "technology sourcing" hypothesis that foreign research labs located on US soil tap into US R&D spillovers and improve home country productivity. Using panels of UK and US firms matched to patent data we...

Persistent link: https://www.econbiz.de/10010745644

Transnational spatial dependencies in the geography of non-resident patent filings

Perkins, Richard; Neumayer, Eric - London School of Economics (LSE) - 2011

particular countries to file for non-resident patents in specific foreign economies. Our major contribution is to show that, in … economies with similar export product structures have filed for a larger number of patents. …

Persistent link: https://www.econbiz.de/10010745678

Research productivity and patent quality: measurement with multiple indicators

Olson Lanjouw, Jean; Schankerman, Mark - London School of Economics (LSE) - 2002

manufacturing firms in the U.S. for the period 1980-93. We focus on three factors: the level of demand, the quality of patents, and … technological exhaustion. We first develop an index of patent ‘quality’ using detailed information on patents in the U.S. in seven … model of R&D, and positively related to the stock market valuation of patented innovations held by firms. …

Persistent link: https://www.econbiz.de/10010746047

Strategic patenting and software innovation

Noel, Michael; Schankerman, Mark - London School of Economics (LSE) - 2006

Persistent link: https://www.econbiz.de/10010746431

Optimal patent renewals

Cornelli, Francesca; Schankerman, Mark - London School of Economics (LSE) - 1996

When firms have different R&D productivities, it may be welfare increasing to differentiate patent lives across inventions. The reason is that any uniform patent life provides excessive incentives to do R&D to the low productivity firms and insufficient incentives to the high productivity firms....

Persistent link: https://www.econbiz.de/10010746713

Identifying technology spillovers and product market rivalry

Bloom, Nick; Schankerman, Mark; Van Reenen, John - London School of Economics (LSE) - 2005

Government policies to support R&D are predicated on empirical evidence of R&D "spillovers" between firms. But there are two countervailing R&D spillovers: positive effects from technology spillovers and negative effects from business stealing by product market rivals. We develop a general...

Persistent link: https://www.econbiz.de/10011125934

Identifying technology spillovers and product market rivalry

Bloom, Nick; Schankerman, Mark; Van Reenen, John - London School of Economics (LSE) - 2013

The impact of R&D on growth through spillovers has been a major topic of economic research over the last thirty years. A central problem in the literature is that firm performance is affected by two countervailing "spillovers" : a positive effect from technology (knowledge) spillovers and a...

Persistent link: https://www.econbiz.de/10011126004