Strict examinations have resulted in drastically shortened life spans for a broad range of biotech 'pioneer' patents in Japan.
This is a preview of subscription content, access via your institution
Subscribe to this journal
Receive 12 print issues and online access
$209.00 per year
only $17.42 per issue
Rent or buy this article
Get just this article for as long as you need it
Prices may be subject to local taxes which are calculated during checkout
Robertson, D. Nat. Biotechnol. 19, 13–14 (2001).
Palva, A.M., Ranki, T.M. & Soederland, H.E. Japanese patent application S60–029207 (1985).
Saiki, R.K. et al. Nature 324, 163–166 (1986).
Section 29(2) of the Japanese Patent Law.
Anonymous. Nature 441, 256 (2006).
35 USC 154 (b).
Section 48–3 (1) of the Japanese Patent Law.
We thank Y. Yoshikawa and M. Muramatsu (Tokyo Medical and Dental University) and H. Shimizu and K. Shimmi (Shimizu Patent Office) for providing suggestions and comments. This analysis has been supported by Special Coordination Funds for Promoting Science and Technology (Ministry of Education, Culture, Sports, Science and Technology of Japan).
The authors declare no competing financial interests.
Supplementary Fig. 1
The examinations for pioneer DNA chip patents in Japan are quite strict (PDF 73 kb)
Supplementary Fig. 2
Prolonged examinations for biotechnology pioneer patents take place in Japan (PDF 75 kb)
Supplementary Table 1
Restricted validities of claims for OGT pioneer patents (PDF 74 kb)
Supplementary Table 2
Restricted validities of claims for Affymetrix pioneer patents (PDF 73 kb)
Supplementary Note 1
Claims of OGT's and Affymetrix's patents (PDF 66 kb)
Supplementary Note 2
Struggle between Affymetrix and the JPO (PDF 63 kb)
Supplementary Note 3
Request examination (PDF 58 kb)
Rights and permissions
About this article
Cite this article
Aida, T., Konishi, A., Hagiwara, M. et al. Shortened life spans of biotech pioneer patents in Japan: a lesson from the DNA chip. Nat Biotechnol 25, 533–535 (2007). https://doi.org/10.1038/nbt0507-533
This article is cited by
Patent term extensions for biologic innovators in Japan
Nature Biotechnology (2011)
Accelerated patent examination procedures spur Japanese university innovation
Nature Biotechnology (2009)