The results in this paper establish that information contained in patents in a technological domain is strongly correlated with the rate of technological progress in that domain. The importance of patents in a domain, the recency of patents in a domain and the immediacy of patents in a domain are all strongly correlated with increases in the rate of performance improvement in the domain of inte...

Some assets are traded in liquid markets, at transparent prices, with the help of many thriving intermediaries: houses and apartments, stocks and other financial products, books, DVDs, electronics and all sorts of collectibles. Intellectual property (IP) in general and patents in particular (the focus of this paper) are not among those assets (Gans and Stern (2010)). The patent market consists ...

As business has become global, so have disputes about patents, patent infringement, and patent validity. In many ongoing disputes between patent holders and alleged infringers, parties are engaging in parallel court proceedings in multiple countries to litigate infringements of parallel patents and to contest the validity of patents. Concentrating litigation involving identical inventions and i...

Patent management is increasingly important for organizations to sustain their competitive advantage. The classification of patents is essential for patent management and industrial analysis. In this study, we propose a novel patent network-based classification method to analyze query patents and predict their classes. The proposed patent network, which contains various types of nodes that repr...

This paper provides novel empirical evidence on the private value of patents and R&D. We analyze an unbalanced sample of firms from five EU countries France, Germany, Switzerland, Sweden and the UK in the period 1985-2005. We explore the relationship between firm’s stock market value and patents, accounting for the ‘quality’ of EPO patents. We find that Tobin’s q is positively and significantly...

This paper aims to cluster Chinese patent documents with the structures. Both the explicit and implicit structures are analyzed to represent by the proposed structure expression. Accordingly, an unsupervised clustering algorithm called structured self-organizing map (SOM) is adopted to cluster Chinese patent documents with both similar content and structure. Structured SOM clusters the similar ...

This paper formulates a dynamic stochastic model to examine the joint patent application and renewal behaviors under an international patent-protection regime. The framework makes it possible to utilize both the cross-sectional (multi-country application) and the time-series (patent renewal) dimensions of available international patenting data to estimate the private value of patent protection,...