Sharon Begley, STAT News 17 August 2016 https://www.statnews.com/2016/08/17/crispr-patent-battle/
A former visiting student, Shuailiang Lin, in Feng Zhang’s lab is claiming that the Zhang lab was unable to program the CRISPR/Cas9 system until after Doudna’s 2012 Science paper. Lin has offered his laboratory notebooks as evidence. These claims are refuted by the Broad Institute. Emails between Doudna and Lin as well as an exchange between Lin and Zhang have been entered as evidence in the ongoing interference proceeding.