The case of the missing royalty stacking in the world mobile wireless industry

Alexander Galetovic and Kirti Gupta

Industrial and Corporate Change, 2020, vol. 29, issue 3, 827-853

Abstract: We build an equilibrium royalty stacking model that links the number of standard-essential patent (SEP) holders with the equilibrium quantity, price and cumulative royalty. We show that all observable implications of the theory are inconsistent with the data from the world mobile wireless industry. In this industry, the number of SEP holders grew from 2 in 1994 to 130 in 2013. Royalty stacking theory predicts falling or stagnant output, rising selling prices, and rising or stagnant quality-adjusted prices. By contrast, between 1994 and 2013 worldwide yearly device sales grew 62-fold, at an average rate of 20.1% per year, and both selling and quality-adjusted prices fell fast over time. Controlling for technological generation, the real average selling price of a device fell between -11.4% and -24.8% per year. Similarly, under conservative parametrizations, royalty stacking theory predicts royalty yields, which are more than an order of magnitude larger than the observed average cumulative royalty yield charged by SEP holders in practice, which hovers between 3% and 3.5%. A theory based on Lerner and Tirole’s (2015, J. Political Econ., 123(3), 547–586) within-functionality competition yields observable implications consistent with the observed facts. If all the technologies protected by SEPs have meaningful substitutes that cap the royalty that any SEP holder can charge, then the cumulative royalty is independent of demand parameters in the downstream market and can be as low as the observed average cumulative royalty yield. Moreover, if the product market is competitive and technological progress is fast, then prices follow costs, quality-adjusted prices protractedly fall, and sales grow fast.

JEL-codes: L1 O31 O38 (search for similar items in EconPapers)
Date: 2020
References: Add references at CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://hdl.handle.net/10.1093/icc/dtz074 (application/pdf)
Access to full text is restricted to subscribers.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:oup:indcch:v:29:y:2020:i:3:p:827-853.

Ordering information: This journal article can be ordered from
https://academic.oup.com/journals

Access Statistics for this article

Industrial and Corporate Change is currently edited by Josef Chytry

More articles in Industrial and Corporate Change from Oxford University Press and the Associazione ICC Oxford University Press, Great Clarendon Street, Oxford OX2 6DP, UK.
Bibliographic data for series maintained by Oxford University Press ().