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Acemoglu, Daron; Akcigit, Ufuk; Kerr, William R. - 2016

linked fields. Our analysis uses 1.8 million U.S. patents and their citation properties to map the innovation network and its … strength. Past innovation network structures are calculated using citation patterns across technology classes during 1975 … predictive power on future innovation after 1995. This pattern is consistent with the idea that when there is more past upstream …

Persistent link: https://www.econbiz.de/10011557905

Dynamic mergers effects on R&D investments and drug development across research phases in the pharmaceutical industry

Siebert, Ralph; Tian, Zhili - 2020

Pharmaceutical ﬁrms spend increasing amounts in mergers and acquisitions (M&As), which raises the question of whether sufficient investment is left after mergers to further develop ﬁrms' internal drug development capability. We evaluate the effects of M&As on ﬁrms' post-merger R&D...

Persistent link: https://www.econbiz.de/10012219372

The impact of entry regulation on total welfare : a policy experiment

Liu, An-Hsiang; Siebert, Ralph; Zulehner, Christine - 2013

This paper evaluates how different lengths of entry regulation impact market structure and market performance using a dynamic structural model. We formulate an oligopoly model in the tradition of Ericson and Pakes (1995) and allow entry costs to vary over time. Firms have the opportunity to...

Persistent link: https://www.econbiz.de/10009764443

Are ex ante and ex post licensing agreements useful instruments to lessen uncertainty in R&D?

Siebert, Ralph - 2013

In the last decades, technologies became more complex which increased the degree of uncertainty in R&D. To overcome the uncertainty, firms frequently engage in R&D collaborations, e.g., Research Joint Ventures (RJVs), and licensing agreements. While RJVs are well explored in the literature, very...

Persistent link: https://www.econbiz.de/10010223406

Population, pensions, and endogenous economic growth

Heer, Burkhard (contributor); Irmen, Andreas (contributor) - 2008

expensive and innovation investments that increase labor productivity are more profitable. We incorporate this channel in a new …

Persistent link: https://www.econbiz.de/10003791799

The impact of R&D cooperations on drug variety offered on the market : evidence from the pharmaceutical industry

Banerjee, Tannista; Siebert, Ralph - 2014

Our study puts special attention to the fact that R&D cooperations in the pharmaceutical industry are formed at different stages throughout the drug development process. We study if the timing to engage in R&D cooperations in the pharmaceutical industry has different impacts on the technology...

Persistent link: https://www.econbiz.de/10010229875

Property rights, optimal public enforcement, and growth

Irmen, Andreas; Kuehnel, Johanna - 2011 - Revised vers.: November 27, 2011

We study the link between public enforcement of property rights, innovation investments, and economic growth in an …

Persistent link: https://www.econbiz.de/10009387238

Endogenous capital- and labor-augmenting technical change in the neoclassical growth model

Irmen, Andreas; Tabakovic, Amer - 2015

innovation investments that increase the productivity of capital and labor in the performance of their respective tasks. These …

Persistent link: https://www.econbiz.de/10011404419

The impact of horizontal mergers on market structure : evidence from the semiconductor industry

Siebert, Ralph - 2016

-level information on mergers, production, and innovation in the dynamic random access memory semiconductor market from 1985 to 2004. Our …

Persistent link: https://www.econbiz.de/10011481190

Heterogeneous merger impacts on competitive outcomes

Siebert, Ralph - 2017

Mergers realize heterogeneous competitive effects on profits, production, and prices. To date, it is unclear whether differential merger outcomes are caused mostly by firms' technology or product market attributes. Furthermore, empirical merger studies conventionally assume that, conditional on...

Persistent link: https://www.econbiz.de/10011717038