This paper has two objectives. First, it describes a new database mapping migratory patterns of inventors, extracted from information included in patent applications filed under the Patent Cooperation Treaty. We explain in detail the information contained in the database and discuss the...

This paper has two objectives. First, it describes a new database mapping migratory patterns of inventors, extracted from information included in patent applications filed under the Patent Cooperation Treaty. We explain in detail the information contained in the database and discuss the...

We assess the role of ethnic ties in the diffusion of technical knowledge by means of a database of patent filed by US-resident inventors of foreign origin, which we identify through name analysis. We consider ten important countries of origin of highly skilled migration to the US, both Asian...

This paper documents the influence of diaspora networks of highly-skilled individuals – i.e., inventors – on international technological collaborations. Using gravity models, it studies the determinants of the internationalization of inventive activity between a group of...

In this paper we review 20 years of quantitative research in the geography of innovation, to whose advancement patent data have contributed in a decisive way. We know now that the importance attributed by the earliest studies to knowledge externalities as an agglomeration force was excessive....