2024 Iowa Code 622.41 – United States and state patents

2023 Iowa Code 622.41 – United States and state patents

2022 Iowa Code 622.41 – United States and state patents

2020 Iowa Code 622.41 – United States and state patents

2018 Iowa Code 622.41 – United States and state patents

2016 Iowa Code 622.41 – United States and state patents

2014 Iowa Code 622.41 – United States and state patents.

2009 Iowa Code 622.41 – United States and state patents