Reverse transcriptase. mRNA, and therefore cDNA, could have things like introns excised. Still, that's like saying "A zip file can't be copyrighted, but whoeve

Reverse transcriptase. mRNA, and therefore cDNA, could have things like introns excised. Still, that's like saying "A zip file can't be copyrighted, but whoever manages to copy the contents once it's been decoded by a third party can copyright the contents." The judgement does not seem to understand that cDNA libraries could be constructed relatively trivially nowadays with hardly a creative thought, with apologies to those who earned their postgraduate degrees doing such a thing.