Nat. Biotechnol. 29, 774–775 (2011); published online 8 September 2011; corrected after print 9 January 2011

In the version of this article initially published, in Box 1, the CEO at VPD is David Collier, not Michael Collier. On p. 775, second column, the University of Pennsylvania has 400 invention disclosures a year, and not, as stated, Penn State. The error has been corrected in the HTML and PDF versions of the article.