A new paper, “Qualitative and Quantitative Patent Valuation Methods: A Systemic Literature Review,” appears in the June 2022 issue of the journal World Patent Information. Authors Nil Girgin Kalip, Yaman Omer Erzurumlu, and Nur Asena Gün conclude that lack of dependable data skew valuations:

The public trade market is minimal for patents and not global. Additionally, because of confidentiality, patent trades are not publicized. Whether a patent is protected or not, new technologies involve many risks and uncertainties. For this reason alone, the selection of an appropriate and mutually accepted patent valuation method gains importance.

The new paper investigates the underlying knowledge structure and the evolution of quantitative and qualitative patent valuation methods. The authors (all from Bahçeşehir University in Turkey) searched peer-reviewed journals that resulted in a review of 129 documents between 1981 and 2021.