Moser, Petra; Rhode, Paul W. - National Bureau of Economic Research (NBER) - 2011
The Plant Patent Act of 1930 was the first step towards creating property rights for biological innovation: it … varieties to examine whether the Act encouraged innovation. Nearly half of all plant patents between 1931 and 1970 were for … innovation: less than 20 percent of new roses were patented, European breeders continued to create most new roses, and there was …