دانلود رایگان مقاله تاثیر اعطای حق ثبت اختراع به جایگاه جغرافیایی تجارت ثبت اختراع

abstract

This paper examines whether patents increase the geographic reach of the market for ideas. By employing a dataset of 25,127 US patents traded between US located firms, we find that patents sold during application phase are less likely to be traded outside the seller's state than patents that have been issued. To tackle the endogeneity issues we employ coarsened exact matching techniques. We find that patent grant increases the likelihood of a patent to be traded across boundaries of the state. This evidence is stronger for patents originating from the less innovative US states.

4. Conclusion

This paper examines whether patents stretch the geographic reach of the market for ideas. Our setting is patent transfers between US located firms. We examine whether patents sold during application phase are less likely to be sold outside the seller's state than patents that are sold after they are issued. In other words, we examine the effect of the patent grant on the probability that the patent will be sold outside the seller's state. Our dataset consists of 25,127 patents granted between 1990 and 2003 and traded among US located firms during the period 1986–2010. Patent grant, however, maybe conflated with merely a timing element; patented inventions may be known for a longer time period and therefore more likely to be sold further way than inventions during the application phase. To deal with this endogeneity problem, we use coarsened exact matching techniques based on the time they take to be sold; in addition we match patents based on quality and state macroeconomic elements.