Firm market valuation and intellectual property assets

This paper investigates the relationship between the innovative activity of the top corporate R&D investors worldwide and their market valuation. The analysis exploits a sample of more than 1,250 publicly listed Multinational Corporations (MNCs) and their intellectual property rights (IPR) – patents and trademarks – filed between 2005 and 2012. The study contributes to the literature on the IPR-market value link by examining the premium resulting from the interactive use of different IPR. Moreover, the empirical setting allows differentiating the effects of an increase in market value derived from additional IPR (within-effects) with respect to the premium received for holding more IPR than the competitors (between-effects). The findings suggest that investors value the simultaneous use of the two IPRs and form their expectations by benchmarking firms. Finally, significant industrial specificities are observed in the individual effects of patents, trademarks and their interactions on the market value of firms.