Dechezlepretre, Antoine, Neumayer, Eric 
ORCID: 0000-0003-2719-7563 and Perkins, Richard 
ORCID: 0000-0002-4963-6494 
  
(2015)
Environmental regulation and the cross-border diffusion of new technology: evidence from automobile patents.
    Research Policy, 44 (1).
     pp. 244-257.
     ISSN 0048-7333
  
  
  
Abstract
We examine the impact of environmental regulation on the international diffusion of new technology through the patent system. We employ a dataset of automobile emission standards between 1992 and 2007 and corresponding data on cross-border patent inflows of technologies developed to comply with these standards. Our analysis, based on a research design of country pair years, shows it is “regulatory distance” between countries rather than absolute regulatory stringency per se that matters for cross-border patent inflows: the flow of compliance technologies rises when regulatory standards in the inventor and the recipient countries become “closer”.
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