Patent Citations as a Measure of Knowledge Flows : the Influence of Examiner Citations

  title={Patent Citations as a Measure of Knowledge Flows : the Influence of Examiner Citations},
  author={Juan Alc{\'a}cer and Michelle Gittelman},
Analysis of patent citations is a core methodology in the study of knowledge diffusion. However, citations made by patent examiners have not been separately reported, adding unknown noise to the data. We leverage a recent change in the reporting of patent data showing citations added by examiners. The magnitude is high: two-thirds of citations on the average patent are inserted by examiners. Furthermore, 40% of all patents have all citations added by examiners. We analyze the distribution of… CONTINUE READING
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