2024 21 CFR 314.52 – Notice of certification of invalidity, unenforceability, or noninfringement of a patent

2023 21 CFR 314.52 – Notice of certification of invalidity, unenforceability, or noninfringement of a patent

2022 21 CFR 314.52 – Notice of certification of invalidity, unenforceability, or noninfringement of a patent

2021 21 CFR 314.52 – Notice of certification of invalidity, unenforceability, or noninfringement of a patent

2020 21 CFR 314.52 – Notice of certification of invalidity, unenforceability, or noninfringement of a patent

2019 21 CFR 314.52 – Notice of certification of invalidity, unenforceability, or noninfringement of a patent

2016 21 CFR 314.52 – Notice of certification of invalidity, unenforceability, or noninfringement of a patent

2015 21 CFR 314.52 – Notice of certification of invalidity or noninfringement of a patent

2014 21 CFR 314.52 – Notice of certification of invalidity or noninfringement of a patent