특허 가치 평가 지표로서의 심사 청구 시기 활용 연구: 심사 청구시기의 결정요인 및 다른 지표와의 관계 분석

From March 2017, the period for requesting examination for patents filed with the Korean Intellectual Property Office was shortened from 5 years to 3 years. There are many previous studies that show that there are advantages and disadvantages according to the period of request for examination and can be used strategically. However, according to previous studies, the applicant has the advantage of not wasting unnecessary examination fees by securing time to think about technologies that do not require rights by granting a predetermined period from the filing date. In general, a dichotomous tendency has been identified to request an examination at the same time in the year of filing or at the end of the period, particularly due to the applicant's intentional delay in requesting an examination. In this study, it was confirmed that the higher the market concentration in the technology field or the larger the number of applicants estimated by the same applicant's application, the tendency to request for examination in the year at which the examination request period ends. Accordingly, the decision on the timing of the request for examination reflected the applicant's intention and examined the correlation with the number of claims, forward citations, backward citations, and number of family countries. The results of this study confirmed the possibility of using the timing of the request for review as a patent valuation index, and especially when it is impossible to identify indicators such as claims, number of citations, or number of families included in the patent document.