TY - BOOK AB - This paper introduces a new measure of patent value – Maintenance Renewal Score (MRSc) – reflecting assignee valuing the patent by paying successive renewal fees. We generate MRSc's for nanotechnology patents issued by the US Patent Office from 1999 through 2009, with US assignees and US inventors. Patenting increases over this period, coincident with increased US funding of nanotechnology R&D. We compare maintenance rates over the period, and against a comparison set of all 1999 USPTO grants to US inventors/assignees. We find differences in propensity to maintain the nanopatents by institution type, technological sector, and patent complexity. AU - Porter, Alan L., AU - Markley, Mark, AU - Snead, Richard, AU - Newman, Nils C., DO - 10.1016/j.wpi.2023.102178 DO - doi ID - 48569 JF - World Patent Information KW - Patent law and legislation. KW - Patents. KW - Patents KW - Copyright. LA - eng LK - https://doi.org/10.1016/j.wpi.2023.102178 N2 - This paper introduces a new measure of patent value – Maintenance Renewal Score (MRSc) – reflecting assignee valuing the patent by paying successive renewal fees. We generate MRSc's for nanotechnology patents issued by the US Patent Office from 1999 through 2009, with US assignees and US inventors. Patenting increases over this period, coincident with increased US funding of nanotechnology R&D. We compare maintenance rates over the period, and against a comparison set of all 1999 USPTO grants to US inventors/assignees. We find differences in propensity to maintain the nanopatents by institution type, technological sector, and patent complexity. T1 - Twenty years of US nanopatenting :Maintenance renewal scoring as an indicator of patent value. TI - Twenty years of US nanopatenting :Maintenance renewal scoring as an indicator of patent value. UR - https://doi.org/10.1016/j.wpi.2023.102178 VL - 73, June, 2023 ER -