특허 인용 네트워크 분석을 활용한 국가연구개발사업 특허의 평가 방안
New Evaluation Method of Patents by National R&D Program with Patent Citation Network Analysis
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본 연구는 특허 인용 정보를 활용하여 국가연구개발사업의 특허를 평가할 수있는 새로운 방법을 제시하였다. 이를 위해 가장 대표적으로 특허의 가치나 질을 나타내는특허의 전방인용 수(피인용 수)를 활용하고, 특허 인용 네트워크에서 개별 특허가 얼마나 중요한 역할을 하고 있는지를 나타내는 네트워크의 중심성 지수를 활용하여 국가연구개발사업의 특허와 민간부문의 특허를 비교하였다. 분석 결과 국가연구개발사업의 특허는 특허의 특성과 출원인의 특성, 기술분야의 특성, 연도 효과를 통제하고도 전방인용 수, 연결중심성, 매개중심성, 페이지 랭크 모두 높은 것으로 나타났다. 즉, 국가연구개발사업의 특허는 민간부문의 특허에 비해 후행기술에 직접 더 많은 영향을 주며, 선행기술과 후행기술을 직접 연결한다. 또한 국가연구개발사업의 특허는 민간부문의 특허에 비해 기술의 효율적인 발전에 기여하며, 중요한 기술들을 연결하는 것으로 나타났다.
Abstract
This study presents a new method to evaluate patents by public R&D program using patent citation network analysis. I used forward citation, degree centrality, betweenness centrality and page rank as the dependent variables which represents the quality of patents. I used primary independent variable as a dummy of public R&D program and controlled patents characteristics, applicant characteristics, technological characteristics and year effect. The empirical result shows that the patents of public R&D program is superior to other patents in regard to the number of forward citation, the degree centrality, the betweenness centrality and the page rank. This empirical result implies that patents of public R&D program directly and effectively connects technologies. Also patents from public R&D program connects important technologies.
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