A Duration Analysis of Patent Renewal Decisions

A Duration Analysis of Patent Renewal Decisions

吳孟玹(Meng-Hsuan Wu)

指導教授 ： 賴子珍

元智大學/管理學院/國際企業學系/碩士(2004年)

摘要

無資料

關鍵字

HASH(0x8ae49bc)

並列摘要

This paper focuses on how patent protection length is affected by firm characteristics, patent citations and other patent record data in the fuel cell technology. The survival analysis was adapted to examine patent owner‘s renewal decision. Two types of firms, namely Bunker and Adventurer, are identified according to firm’s intangible assets measured by firm’s MTB (market-to-book value) ratio. The regression evident that patent survival follows a Weibull distribution, and the relationship between firm types, that defined by its MTB ratio, and duration as reversed U shape. That means patents held by bunker type firm are more likely to be renewed and patents held by Adventurer type firm are less likely to be renewed. Other results are consistent with the findings in most literatures that patent citations are positively related to patents’ value hence their legal protection duration.

並列關鍵字

patent duration analysis, patent value, market-to-book value, Adventurer, Bunker

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