> why can licenses like GNU GPL3.0 be enforced in US courts but not for new plant varieties? I don't know enough to be able to address your question directly,

> why can licenses like GNU GPL3.0 be enforced in US courts but not for new plant varieties? I don't know enough to be able to address your question directly, but it's worth nothing that at least in the U.S. IP protections for plant breeding and propagation are often highly specialized, both in terms of how patents operate as well as extending to non-patent regimes. See, e.g., https://en.wikipedia.org/wiki/Plant_Variety_Protection_Act_of_1970 https://en.wikipedia.org/wiki/Plant_Variety_Protection_Act_o... and https://en.wikipedia.org/wiki/Plant_Patent_Act_of_1930 https://en.wikipedia.org/wiki/Plant_Patent_Act_of_1930