While the second part is a bit disappointing. Does that mean if you manage to successfully isolate a natural version of a patented cDNA, then that patent becom

While the second part is a bit disappointing. Does that mean if you manage to successfully isolate a natural version of a patented cDNA, then that patent becomes effectively invalid? In practice this might not be the hardest thing to do. Do you like someone's engineered version of a gene? Then transform some randomized libraries into cell cultures (or add mutagens) and keep fishing until you extract a "natural" copy that is the same as the patented cDNA.