Arbeitspapier

It's a Small(er) World: The Role of Geography and Networks in Biotechnology Innovation

Using patent citation data for the U.S., we test whether knowledge spillovers in biotechnology are sensitive to distance. Controlling for self-citation by inventor, assignee and examiner, cohort-based regression analysis shows that spillovers are local but that distance is becoming less important with time. Network analysis paints a picture of a stable network between states, but a changing environment between individual actors, with a growing importance of connectedness. The popular maxim that everyone is connected by six degrees of separation is tested with surprising results.

Language
Englisch

Bibliographic citation
Series: Wellesley College Working Paper ; No. 2002-01

Classification
Wirtschaft
Subject
Biotechnische Industrie
Innovation
Patent
Spillover-Effekt
Wissenstransfer
Regionale Konzentration
Schätzung
USA

Event
Geistige Schöpfung
(who)
Johnson, Daniel K.N.
Mareva, Milena
Event
Veröffentlichung
(who)
Wellesley College, Department of Economics
(where)
Wellesley, MA
(when)
2002

Handle
Last update
10.03.2025, 11:44 AM CET

Data provider

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Object type

  • Arbeitspapier

Associated

  • Johnson, Daniel K.N.
  • Mareva, Milena
  • Wellesley College, Department of Economics

Time of origin

  • 2002

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