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Beatriz P Almeida, Eduardo Gonçalves and Raquel Coelho Reis
 
''Path dependence and regional lock-in: an analysis using patent self-citations''
( 2019, Vol. 39 No.4 )
 
 
Patent citation data has been used to track the flow of knowledge between firms and regions. However, patent self-citations are mostly excluded from studies because they do not represent knowledge spillovers. This paper proposes the use of self-citations as indicators of path-dependence and lock-in since they reveal the regional accumulation of knowledge in certain technological areas. The results indicate that regions which have more self-citations may be in a positive or negative lock-in process. Self-citations may measure a natural path dependent trajectory, which is the case of the dynamic and innovative regions but they may also indicate a myopic process of old industrial regions.
 
 
Keywords: path dependence, lock-in, patent self-citations, regional inventions
JEL: O1 - Economic Development: General
R1 - General Regional Economics (includes Regional Data)
 
Manuscript Received : Apr 10 2019 Manuscript Accepted : Dec 11 2019

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