발명자 네트워크가 발명성과에 미치는 효과 - 기업소속 특허 다출원 발명자를 중심으로 -
The Effect of a Co - invention Network on Inventive Productivity of a Firm’s Prolific Inventor
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본 연구는 1995년∼2005년의 기간 동안 한국 특허청에 출원된 내국인 특허의 공동발명자료를 이용하여 다출원 발명자를 식별한 후 다출원 발명자의특정 유형을 정의하고 변수화한다. 이러한 유형 변수와 함께 네트워크 특성및 기업 특성 등을 포함한 특성변수들이 다출원 발명자의 특허성과(연구생산성)에 미치는 효과를 회귀분석한다. 본 연구의 결과는 다음과 같다. 첫째, 단독발명만 하거나 공동발명만 하는 경우보다는 단독발명과 공동발명의 경험을 동시에 가진 발명자들의 후속 발명성과가 더 높았다. 둘째, 지속적인 발명자일수록 발명성과가 높았다. 셋째, 네트워크 규모가 크고 네트워크 연결의 강도가 클수록 발명성과가 높았다. 넷째, 기업발명자가 35세~40세에 해당될 때 가장 발명성과가 높았지만, 대체로 발명자의 나이와 발명성과 간에는 음(-)의 선형관계가 존재하는 것으로 추정되었다. 다섯째, 기업의 혁신자산과 기업규모는 발명자의 발명성과에 정(+)의 효과를 미치는 요인으로 나타났으나, 기업나이는 발명성과에 유의한 영향을 미치지 못하는 것으로 나타났다.
Abstract
This paper defines prolific inventors and co-invention networks after identifying individual inventors by using patent applications filed to the KIPO during the years from 1995 to 2005. The paper sets up variables related to prolific inventors and co-invention networks. The paper investigates the effects of these variables on a prolific inventor's inventive productivity (research productivity) along with characteristics of a firm to which an inventor belongs by using the multiple regression analysis. First, the paper finds that a prolific inventor with both collaborative and single-handed inventions shows higher inventive productivity than a lonely inventor or a joint inventor does. Second, a serial inventor shows higher inventive performance. Third, the size and integration (embeddedness) of a ego network are positively correlated with inventive activities. Fourth, whereas inventors aged between 35 and 40 record highest inventive performances, the age variable has a negative simple linear relation with invention activities of a prolific inventor in general. Finally, both innovative capital and size of a firm have positive effects on inventions of prolific inventors.
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