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Change of claim structures of market leaders’ Japanese published unexamined patent applications according to the degree of technology maturity

Paper ID Volume ID Publish Year Pages File Format Full-Text
38010 45644 2011 8 PDF Available
Title
Change of claim structures of market leaders’ Japanese published unexamined patent applications according to the degree of technology maturity
Abstract

This paper analyses claim structures of Japanese published unexamined patent applications on digital camera filed by firms participating in the Japanese market of digital camera for each of the stages from the innovator stage to the late majority stage and investigates the contribution of claim structures to capture of market share for each stage. A main finding is that claim structures reflect the life-cycle stages of a product. The market leader of the early adopter stage filed patent applications having more independent claims of which the claim category is ‘digital camera’ or the like compared to the rest of the participating firms, while the market leader of the late majority stage has more dependent claims. This indicates that it is critical to cover a maximal scope of the invention by plural independent claims in the early adopter stage, while, in the late majority stage in which the technologies are highly matured, the total number of dependent claims are increased to protect the market leader’s technologies against competitors and as a means of fallback options.

► Claim structures of Japanese patent applications, in relation to stages of technological maturity, are explored. ► For market leaders a close relationship is found. ► At early adopter stage, they file more independent claims. ► At late majority stage, they file more dependent claims.

Keywords
Claim structure; Japanese published unexamined patent applications; Independent claims; Dependent claims; Early adopter stage; Late majority stage; Digital camera; Maximal claim scope; Market share
First Page Preview
Change of claim structures of market leaders’ Japanese published unexamined patent applications according to the degree of technology maturity
Publisher
Database: Elsevier - ScienceDirect
Journal: World Patent Information - Volume 33, Issue 2, June 2011, Pages 180–187
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering