Versions of 37 CFR 4.2 - Definitions on LawServer 2024 37 CFR 4.2 – Definitions 2023 37 CFR 4.2 – Definitions 2022 37 CFR 4.2 – Definitions 2021 37 CFR 4.2 – Definitions 2020 37 CFR 4.2 – Definitions 2019 37 CFR 4.2 – Definitions 2016 37 CFR 4.2 – Definitions 2015 37 CFR 4.2 – Definitions 2014 37 CFR 4.2 2010 37 CFR 4.2 – Definitions 2009 37 CFR 4.2 – Definitions