Biotech Patent Wars: If at First You Don’t Succeed . . . University of California v. The Broad Institute Abstract This case discussed in this article is about two methods of editing DNA: one that has infinitely more lucrative applications because it can edit human DNA (plus all animals and plants), another that works in cell-free environments. Whether inventions are separate or part of the same innovation is an important factor in patent interference disputes; if there are two patentably distinct inventions there cannot be interference. One party in this case lost its argument that there was only one invention at issue, but returned with a second interference claim, arguing that it was the first inventor to constructively reduce to practice the animal and plant DNA editor. In this article, the author examines the nuances and intricacies of the patent process in the world [...]