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

Arbeitspapier

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.

Object Details

• Language: Englisch

References and Relationships

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

Classification and Topics

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

Contributors, Places and Time

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

Further information

• Handle: http://hdl.handle.net/10419/23232
• Last update: 10.03.2025, 11:44 AM CET