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Are there enduring patents?

Author

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  • Elliot Noma
  • Dominic Olivastro

Abstract

U.S. patents (and the technology they represent) age and eventually become obsolete. In this diachronous study, the citations by patents in a given year are compared to the number in subsequent years. The major findings are that, even though influential patents remain influential as they age, both highly and infrequently cited patents age at the same rate. This means that citations do not automatically beget more citations, and without this bandwagon effect, no patents are enduring. In addition, the distribution of patents by number of citations received is stable over time (here, in each year they are distributed as a negative binomial).

Suggested Citation

  • Elliot Noma & Dominic Olivastro, 1985. "Are there enduring patents?," Journal of the American Society for Information Science, Association for Information Science & Technology, vol. 36(5), pages 297-301, September.
    • Handle: RePEc:bla:jamest:v:36:y:1985:i:5:p:297-301
    DOI: 10.1002/asi.4630360503
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    Cited by:

    1. Rodrigo Costas & Thed N. Leeuwen & Anthony F. J. Raan, 2011. "The “Mendel syndrome” in science: durability of scientific literature and its effects on bibliometric analysis of individual scientists," Scientometrics, Springer;Akadémiai Kiadó, vol. 89(1), pages 177-205, October.

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