Language Barriers and the Speed of Knowledge Diffusion

Higham, Kyle: Sadao Nagaoka
22-E-074 RIETI Discussion Paper Series （2022/08/18）

Revisiting incremental product innovations in the food manufacturing industry: An empirical study on the effect of intellectual property rights

Yoshioka-Kobayashi, Tohru: Tomofumi Miyanoshita: Daisuke Kanama
『Journal of Economic Structures』 （2020/04/20）

The highly competitive and mature food industry has long been process innovation-oriented while largely neglecting product/technological innovation. However, recent innovation debates have raised two issues. First, imitations of product innovations likely underestimate the value of innovation in this industry; second, exaggerations of …

Profiting from (not too many) package designs: evidence from a firm level design registration analysis in the food manufacturing industry

Miyanoshita, Tomofumi: Tohru Yoshioka-Kobayashi: Daisuke Kanama
『British Food Journal』 Vol. 122 No. 7 pp. 2233-2251 （2020/04/01）

Effects of early patent publication on knowledge dissemination: Evidence from U.S. patent law reform

Okada, Yoshimi :Sadao Nagaoka
『Information Economics and Policy』 （2020/01/25）

In order to assess effects of early publication of patent applications on the dissemination of the disclosed technological knowledge, this study examines the impacts of the 18-month pre-grant publication system introduced in the United States in 2000. It focuses on the variations of the applicant non-self-citations driven by the actual…

3. Standard Essential Patent War: Samsung vs Apple (in Korean)

Kang, Byeongwoo, 『4.0 Industry and Standardization: Case Studies』 pp. 43-62
韓国・博英社（2019/07/01）

International protection of standard essential patents

Dang, Jianwei: Byeongwoo Kang: Ke Ding
『Technological Forecasting and Social Change』 Vol. 139 pp. 75-86 （2019/02/01）

Technical standards in the mobile communications industry have been developed from national to regional and from regional to global. In the current era, global standards in the industry have enabled the formation of a single global market. However, because standard essential patents (SEPs) are territorial given the nature of the patent…

Making the patent scope consistent with the invention: Evidence from Japan

Okada, Yoshimi : Yusuke Naito : Sadao Nagaoka
『Journal of Economics & Management Strategy』 Vol. 27 Issue 3 pp. 607-625 （2018/07/31）

It is a crucial function of patent examination to make the patent scope consistent with the contribution of the invention to the state of the art. We assess this function using newly developed data on the scope of Japanese patent applications and grants. We find that the scope was narrowed in two thirds of the grants, both the incidenc…

How Does Innovation Occur in India? Evidence from the JIRICO Survey

The International Schumpeter Society （2018/07/04）

Young Scholars Award 2018: This paper reports the results of the JIRICO survey to shed light on the drivers and obstacles to innovation in India, and how the intellectual property rights system, particularly patents, play a role in the larger innovation ecosystem of the country. Findings are on three issues: (1) Motivation of Innovati…

How does innovation occur in India? Evidence from the JIRICO survey

Bharadwaj, Ashish : Byeongwoo Kang
WP#18-05 Hitotsubashi University IIR （2018/01/30）

Based on the first innovation survey of 1139 firms in India, this paper provides innovation activities in India. Findings in this paper will provide insights to other emerging countries that pursue endogenous innovation.

Global Spread of Pharmaceutical Patent Protection: Micro Evidence from the International Equivalents of Drug

Okada, Yoshimi : Sadao Nagaoka
『Patents in Japan, Millennial Asia』 Vol.8 No.1 pp. 26-47 （2017/04/11）

Impact of Patent Scope on subsequent Inventions: Findings from a new Measure

Okada, Yoshimi : Yusuke Naito : Sadao Nagaoka
WP#17-03 Hitotsubashi University IIR （2017/02/20）

While patent scope defined by patent claims provides crucial information on the contribution of underlying inventions to the state of the art, its existing measures do n…

Contribution of Patent Examination to Making the Patent Scope Consistent with the Invention: Evidence from Japan

Okada, Yoshimi : Yusuke Naito : Sadao Nagaoka
RIETI Discussion Paper 16-E-092 Research Institute of Economy, Trade and Industry (RIETI) （2016/11/29）

Delineating the patent scope consistently with the contribution of the disclosed invention is one of the most crucial requirements for a patent system to promote innovation effectively. Given the incentive of an applicant to set a scope for the patent as broad as possible, an important task of the Patent Office is to narrow it so that …

Landscape of Standard Essential Patents: Case of East Asian Firms

The 7th Asia-Pacific Innovation Conference （2016/11/18）

Conference Paper: submitted by Dang, Jianwei, Byeongwoo Kang and Ke Ding

Global spread of pharmaceutical patent protections: micro evidence from the international equivalents of the drug patents in Japan

Okada, Yoshimi : Sadao Nagaoka
WP#16-07 Hitotsubashi University IIR （2016/07/13）

We investigate the global spread of pharmaceutical patent protections as acquired by firms, based on a novel global patent database for all significant medical drugs introduced in Japan. It gives us the propensity of filing and grant rate for each country for the granted patents in Japan. Major findings are the following. Both the fili…

Claim Length as a Value Predictor of a Patent

Okada, Yoshimi : Yusuke Naito : Sadao Nagaoka
WP#16-04 Hitotsubashi University IIR （2016/04/07）

The claim of a patent defines the scope of patent right and provides crucial information on patent value. However, most empirical research uses only the number of claims as an indicator of patent value. We show that the breadth of a claim of Japanese patents, measured by the inverse of claim length, has significant explanatory power fo…

Effects of early patent disclosure on knowledge dissemination: evidence from the pre-grant publication system introduced in the United States

Okada, Yoshimi and Sadao Nagaoka
WP#15-12 Hitotsubashi University IIR （2015/07/10）

In order to assess the disclosure function of the patent system, this study examined the impact of the pre-grant publication system introduced in the United States in 2000. Unlike earlier studies, the applicant (inventor) non-self-citations (excluding examiner citations) were used to track knowledge flow. The causal effects of disclosu…

Reassessing Patent Propensity: Evidence from a dataset of R&D awards, 1977–2004

Roberto Fontana:Nuvolari, Alessandro:Shimizu, Hiroshi:Vezzulli, Andrea
『Research Policy』 Vol. 42 (10) pp.1780-1792 （2013/12/01）

Intermediary Functions and the Market for Innovation in Meiji and Taisho Japan

Nicholas, Tom: Hiroshi Shimizu
『Business History Review』 Vol.87 (Spring) pp.121-149 （2013/05/25）

Does the outsourcing of prior art search increase the efficiency of patent examination?

Yamauchi, Isamu : Sadao Nagaoka
WP#13-12 Hitotsubashi University IIR （2013/05/07）

This paper investigates the effects of outsourcing of prior art search on the efficiency of patent examination, using a large scale Japanese patent examination data. Out…

Who Invents?: Evidence from the Japan-U.S. Inventor Survey

Walsh, John:Sadao Nagaoka
RIETI Discussion Paper 09-E-022 Research Institute of Economy, Trade and Industry （2009/07）