TY - BOOK 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. DO - 10.1016/j.wpi.2023.102178 DO - doi 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. T1 - Twenty years of US nanopatenting :Maintenance renewal scoring as an indicator of patent value. AU - Porter, Alan L., AU - Markley, Mark, AU - Snead, Richard, AU - Newman, Nils C., JF - World Patent Information VL - 73, June, 2023 LA - eng ID - 48569 KW - Patent law and legislation. KW - Patents. KW - Patents KW - Copyright. TI - Twenty years of US nanopatenting :Maintenance renewal scoring as an indicator of patent value. LK - https://doi.org/10.1016/j.wpi.2023.102178 UR - https://doi.org/10.1016/j.wpi.2023.102178 ER -