The foundational patents on the CRISPR-Cas9 technology remain hung up in an ugly legal fight. But applications for new patents on specific uses of the genome-editing system continue to be filed.
The latest, published on Thursday but first filed in 2013, covers the use of CRISPR-Cas (it’s broader than just Cas9) in what are called nucleotide repeat disorders — basically, inherited diseases in which DNA stutters: A gene includes hundreds, instead of just a few, repeats of strings of letters such as CAG or CGG.
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