23.06.2023
Chapter

Virtual Patent Networks and Their Network Effects

About the book chapter:

On the basis of the economic theory of network effects, this article provides a novel explanation of the so-called patent paradox, i.e. the question why the propensity to patent is so strong when the expected average value of most patents is low. It demonstrates that the patent system of a country resembles a telephone network or a social media platform. Patents are perceived as nodes in a virtual network that, as a whole, exhibits network effects. It is explained why patents are not independent of other patents but that they complement each other in several ways both within and beyond markets and fields of technology, and that patents thus create synchronization value over and above individual interests of patent holders in exclusivity. As a consequence, the more patents there are, the more valuable it is to also seek patents, and vice versa. Since patents thus display increasing returns to adoption, the willingness to pay for the next patent slopes upwards. This explains why, after a phase of early instability and a certain tipping point, many countries’ patent systems expanded quickly and eventually became a rigid standard (“lock-in”). The concluding section raises the question what regulatory measures are suitable to effectively address the ensuing anticommons effects.

About the anthology:

This book traces the academic footprint of Hanns Ullrich. Thirty contributions revolve around five central topics of his oeuvre: the European legal order, competition law, intellectual property, the regulation of new technologies, and the global market order. Acknowledging him as a trailblazer, the book aims to capture how deeply Hanns Ullrich has influenced contemporaries and subsequent generations of scholars. The contributors re-iterate the path-breaking patterns of his teachings, such as his contemplation of intellectual property as embedded in competition, the necessity of balancing private and public interests in intellectual property law, the policies of market integration, and the peculiar relationship of technological advancement and protectionism.

News from the research center

Publication
08.01.2026 | Journal article

The rural-urban divide in Europe

Riera, Pedro; Roßteutscher, Sigrid (Hrsg.) (2025): „The rural-urban divide in Europe: Assessing its impact on political attitudes and voting behavior“. In: Electoral Studies, Special Issue.

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Publication
08.01.2026 | Journal article

Gender Differences in Financial Advice

Bucher-Koenen, Tabea; Hackethal, Andreas; Koenen, Johannes; Laudenbach, Christine (2025): „Gender Differences in Financial Advice“. In: American Economic Review, 115 (12), pp. 4218–4252.

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News
11.12.2025

Jonathan White on future thinking in democracies

On the second date of the lecture series "At the crossroads? On the crisis of democracy". Political scientist White discusses views on the future of democracies. A follow-up report

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News
04.12.2025

The crisis of democratic theory from a sociological perspective

Sociologist Jenny Brichzin's lecture "Crisis of Democratic Theory? A sociological intervention" opened our lecture series "At the crossroads? On the future of democratic theory". The sociologist criticized the fact that social coexistence has so far been insufficiently addressed in democratic theory. A follow-up report

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Publication
03.12.2025 | Journal article

The Archipelago Capitalism of Citizenship-By-Investment

Džankić, Jelena; Seyfettinoglu, Mira; Shachar, Ayelet; Vink, Maarten; Baaren, Luuk van der (2025): „The Archipelago Capitalism of Citizenship-By-Investment“. In: Comparative Political Studies, OnlineFirst.

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Publication
01.12.2025

Non-Fiction Cinema in Postwar Europe

Hediger, Vinzenz (2025): „Preface: (Re)Building Europe through Cinema (Studies)”. In: Cesalkova, Lucia, et al. (eds.): Non-Fiction Cinema in Postwar Europe. Visual Culture and the Reconstruction of Public Space. Amsterdam University Press.

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Publication
21.11.2025 | Chapter

Die Möglichkeiten des Einsatzes von Multi-Party-Computation beim Datenaustausch zwischen Sicherheitsbehörden als Grundlage der Qualitätssicherung von KI-Anwendungen

Müllmann, Dirk; Spiecker gen. Döhmann, Indra (2025): „Die Möglichkeiten des Einsatzes von Multi-Party-Computation beim Datenaustausch zwischen Sicherheitsbehörden als Grundlage der Qualitätssicherung von KI-Anwendungen“. In: Honekamp, Wilfried; Kemme, Stefanie; Struck, Jens: Auswirkungen von Künstlicher Intelligenz auf die zukünftige Polizeiarbeit. Springer.

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Publication
21.11.2025 | Chapter

Die Sicherheit der Zukunft – Künstliche Intelligenz und soziale Kontrolle: Vom Predictive Policing zum Social Scoring

Singelnstein, Tobias (2025): „Die Sicherheit der Zukunft – Künstliche Intelligenz und soziale Kontrolle: Vom Predictive Policing zum Social Scoring“. In: Honekamp, Wilfried; Kemme, Stefanie; Struck, Jens: Auswirkungen von Künstlicher Intelligenz auf die zukünftige Polizeiarbeit. Springer.

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Publication
21.11.2025 | Anthology

Handbook of Leadership. Applied Business Psychology for Managers

Felfe, Jörg; Dick, Rolf van (eds.) (2025): Handbook of Leadership. Applied Business Psychology for Managers. Springer.

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