Surveying the CRISPR-Cas9 Patent Landscape in the United States
This post will discuss the patent landscape of the groundbreaking CRISPR-Cas9 systems in the United States, including pending legal disputes. A CRISPR-Cas9 system is a combination of protein and ribonucleic acid (“RNA”) that can alter the genetic sequence of an organism. CRISPR-Cas systems occur naturally in bacteria and help the bacteria target and cut identified virus deoxyribonucleic acid (“DNA”). The CRISPR-Cas9 system is being developed as a powerful tool to modify specific DNA in the genomes of more complicated organisms, including plant and animal cells. For the purpose of this overview, the mechanism of CRISPR-Cas9 is explained in the Patent Trial and Appeal Board (PTAB)’s Broad Institute v. The Regents of the University of California interference decision. As the decision explains, the CRISPR-Cas9 system comprises three effective parts: a guide-RNA sequence, an activator-RNA sequence, and a protein called Cas9. CRISPR-Cas9 alters a target DNA molecule by first binding the guide-RNA sequence to a specific sequence in the DNA of interest. The activator-RNA sequence then interacts with the Cas9 protein, and the Cas9 protein cuts the target DNA at a specific site. By linking a DNA-cutting protein (Cas9) to a specific site on the target DNA, the CRISPR-Cas9 system achieves specific targeted manipulation of DNA. The U.S. Patent and Trademark Office (USPTO) has granted patents to variations...