Essays on the Economics of Innovation

Abstract : The first part of this thesis studies the recent emergence of new actors in the market for patents, namely, non-practicing entities, who acquire patents with no aim to use them to produce a final good. On the one hand, patent assertion entities seek to acquire patents so as to monetize them through the threat of litigation for patent infringement. On the other hand, defensive aggregators acquire patents to provide safety from litigation brought by patent trolls to their affiliated firms. We analyze the strategic behavior of non-practicing entities in the patent acquisition process and highlight patent assertion entities' greater ability to preempt patents as compared to producing firms. Then, we examine the effectiveness of defensive aggregators to protect firms against litigation brought by patent assertion entities. Finally, the last part instead studies the effects of one-way spillovers in the context of non-tournament models of R&D in which ex-ante identical firms engage in cost-reducing innovation and then compete à la Cournot in the product market. We analyze how a deterministic unidirectional spillover process induces heterogeneity across firms in the product market competition, and examine the impact of uncertainty about the appropriability of R&D investments on incentives to undertake R&D.
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Charlène Cosandier. Essays on the Economics of Innovation. Economics and Finance. PSL Research University, 2016. English. ⟨NNT : 2016PSLEM001⟩. ⟨tel-01354167⟩

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