Innovation processes within corporations increasingly tap into international technology sources, yet little is known about the relative contribution of different types of innovation channels. We investigate the effectiveness of different types of international technology sourcing activities...

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