Market Value And Patent Citations

As patent data become more available in machine-readable form, an increasing number of researchers have begun to use measures based on patents and their citations as indicators of technological output and information flow. This paper explores the economic meaning of these citation-based patent measures using the financial market valuation of the firms that own the patents. Using a new and comprehensive dataset containing over 4800 U. S. Manufacturing firms and their patenting activity for the past 30 years, we explore the contributions of R&D spending, patents, and citation-weighted patents to measures of Tobin's Q for the firms. We find that citation-weighted patent stocks are more highly correlated with market value than patent stocks themselves and that this fact is due mainly to the high valuation placed on firms that hold very highly cited patents

This manual provides guiding principles for the use of patent data in the context of S&T measurement, and recommendations for the compilation and interpretation of patent indicators in this context.

A study of how patents and citation data can serve empirical research on innovation and technological change.

This book fills an important gap in the literature and will be very useful both to students of intellectual property and practitioners confronted by the problem of valuing their patent portfolios. An excellent overview of an evolving and challenging area, it provides the necessary background to thinking about the problem of valuation and describes all the major methods in use, including the real options approach. Bronywn H. Hall, University of California, Berkeley, US In depth knowledge and scientific approach are used to improve patent valuation techniques. . . a dream book for both researchers and practitioners interested in identifying the value of creative minds. Bruno van Pottelsberghe, Solvay Brussels School of Economics and Management, ULB, Belgium The Economic Valuation of Patents provides an original and essential analysis of patent valuation, presenting the main methodologies to value patents in different contexts. Starting with an analysis of the relevance of patent valuation from a strategic, economic and legal perspective, the book undertakes a thorough review of the existing financial and qualitative valuation methodologies. The contributing authors, IP experts from academia and business, discuss the application of valuation issues in various contexts such as patent portfolio management, licensing agreements, IP litigation, IP-backed finance and accounting. For each topic, an introductory theoretical background is provided and specific application contexts are then investigated. This multidisciplinary book bridges theory and practice in a unique and novel way that will be appreciated by graduate students, scholars and practitioners alike.

Intangible assets such as knowledge or brands are increasingly important to companies. Such assets are essentially needed to develop new innovative products and to introduce them to the market. Philipp Sandner is one of the first researchers to approach the valuation of both technology- and market-based intangibles simultaneously by relying on portfolios of intellectual property (IP) derived from patents and trademarks.

This paper provides novel empirical evidence on the private value of patents and R&D in European firms during the period 1991-2004. We explore the relationship between firm's stock market value, patents, and "quality"-weighted patents issued by the European Patent Office (EPO) and the US Patent and Trademark Office (USPTO). We find that Tobin's q is positively and significantly associated with R&D and patent stocks, but that only those patents taken out in both patent offices or at the USPTO alone seem to be valued. Either forward citations or a composite quality indicator based on forward citations, family size and the number of technical fields covered by the patent are modestly informative for value. Software patents account for a rising share of total patents in the USPTO and EPO. Moreover, some scholars of innovation and intellectual property rights argue that software and business methods patents on average are of poor quality and that these patents are applied for merely to build portfolios rather than for protection of real inventions. We found that such patents are considerably more valuable than ordinary patents, especially if they are taken out in the U.S. However their quality indicators are no more valuable than those of other patents, suggesting that their primary purpose may be to increase the size of the patent portfolio.

This volume assembles papers commissioned by the National Research Council's Board on Science, Technology, and Economic Policy (STEP) to inform judgments about the significant institutional and policy changes in the patent system made over the past two decades. The chapters fall into three areas. The first four chapters consider the determinants and effects of changes in patent "quality." Quality refers to whether patents issued by the U.S. Patent and Trademark Office (USPTO) meet the statutory standards of patentability, including novelty, nonobviousness, and utility. The fifth and sixth chapters consider the growth in patent litigation, which may itself be a function of changes in the quality of contested patents. The final three chapters explore controversies associated with the extension of patents into new domains of technology, including biomedicine, software, and business methods.

Suggests empirical justification to its arguments, both for the United States and Europe, covering two of the most important patenting institutions (EP, USPTO). Offers a composite index for measuring patent valuation and analyses this value with respect to combined IP strategies.