Versions of See prior versions of a law on LawServer 2023 Montana Code 42-2-610. Putative father — termination based upon failure to establish substantial relationship 2022 Montana Code 42-2-610. Putative father — termination based upon failure to establish substantial relationship 2021 Montana Code 42-2-610. Putative father — termination based upon failure to establish substantial relationship 2019 Montana Code 42-2-610. Putative father — termination based upon failure to establish substantial relationship 2018 Montana Code 42-2-610. Putative father — termination based upon failure to establish substantial relationship 2016 Montana Code 42-2-610. Putative father — termination based upon failure to establish substantial relationship 2014 Montana Code 42-2-610. Putative father — termination based upon failure to establish substantial relationship 2013 Montana Code 42-2-610. Putative father — termination based upon failure to establish substantial relationship 2009 Montana Code 42-2-610 – Putative father — termination based upon failure to establish substantial relationship