A detailed examination of the impact of the US Plant Patent Act. Passed by the US Congress in 1930, the PPA is the world's oldest sui generis intellectual property system designed for the patenting of life forms.
Utility Plant Patents: A Review of the U.S. Experience (1985 - July, 1995)
Submitted on 01 August 1995
Staking Ever-Broader Claims on Entire Species and Important Traits; Implications for the South