nep-ipr New Economics Papers
on Intellectual Property Rights
Issue of 2016‒07‒16
three papers chosen by
Giovanni Ramello
Università degli Studi del Piemonte Orientale “Amedeo Avogadro”

  1. Patent citation indicators: One size fits all? By Jurriën Bakker; Dennis Verhoeven; Lin Zhang; Bart Van Looy
  2. Measuring patent quality and national technological capacity in cross-country comparison By Boeing, Philipp; Mueller, Elisabeth
  3. Researching song titles, product cycles and copyright in published music: problems, results and data sources By Ruth Towse; Hyojung Sun

  1. By: Jurriën Bakker; Dennis Verhoeven; Lin Zhang; Bart Van Looy
    Abstract: The number of citations that a patent receives is considered an important indicator of the quality and impact of the patent. However, a variety of methods and data sources can be used to calculate this measure. This paper evaluates similarities between citation indicators that differ in terms of (a) the patent office where the focal patent application is filed; (b) whether citations from offices other than that of the application office are considered; and (c) whether the presence of patent families is taken into account. We analyze the correlations between these different indicators and the overlap between patents identified as highly cited by the various measures. Our findings reveal that the citation indicators obtained differ substantially. Favoring one way of calculating a citation indicator over another has non-trivial consequences and, hence, should be given explicit consideration. Correcting for patent families, especially when using a broader definition (INPADOC), provides the most uniform results.
    Keywords: patent citations, EPO, USPTO, PCT, patent family, multivariate analysis
    Date: 2016–06
  2. By: Boeing, Philipp; Mueller, Elisabeth
    Abstract: China recently surpassed the USA as the greatest global source of patent applications. However, without internationally comparable measures of patent quality it remains questionable whether China's patent expansion constitutes the rise of a new technological superpower. Our novel quality index is based on citations from international search reports and provides internationally comparable, quality-adjusted figures for applications made under the Patent Cooperation Treaty (PCT). We show that China's patent expansion has taken place to the detriment of patent quality. Weighting national PCT counts with our index reveals a widening gap between the technological capacities of China and the leading USA.
    Keywords: patent quality,national technological capacity,cross-country comparison
    JEL: O32 O34
    Date: 2016
  3. By: Ruth Towse (CIPPM, Bournemouth University and CREATe (University of Glasgow)); Hyojung Sun (CIPPM, Bournemouth University and University of Edinburgh)
    Abstract: The purpose of this Working Paper is to pass on our experience of research on song titles and product cycles in UK music publishing which was intended to provide evidence of the impact of copyright in a market. The Working Paper relates to the article ‘Economics of Music Publishing: Copyright and the Market’, published in the Journal of Cultural Economics, 2016. The context of the research was a project on copyright and business models in music publishing that was part of the AHRC funded project: the ‘Economic Survival in a Long Established Creative Industry: Strategies, Business Models and Copyright in Music Publishing’. By collecting data on the product cycles of a sample of long-lasting song titles and trying to establish changes in the product cycle as the copyright regime changed we had hoped to produce empirical evidence on the effect changes in the copyright regime, such as term extension, or to those in copyright management organisations. For a variety of reasons, this proved impossible to do (at least in the UK) and the Working Paper explains what we think were the reasons. It may also serve as a possible warning to others attempting the same thing. The paper also suggests that previous research that did not consider the ambiguities of ‘a song title’ may be flawed.
    Keywords: Song titles, product cycles, copyright
    JEL: Z11 Z18 L88
    Date: 2016–06

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