That "best guess" comes from Hank Greely, who has been pondering stem cell legal issues for a number of years.
Writing on the Law and Biosciences Blog on the Stanford Law School web site, Greely issued the usual legal caveats and then said,
"But my best guess is that, sometime in 2013, the Supreme Court denies cert in this case and this question mark over human embryonic stem cell research funding is ended – though there may certainly be other questions raised between now and then.Sphere: Related Content
"It is tempting to say 'all’s well that ends well.' The judiciary seems to be headed to making a decision in this matter that is both (in my view) clearly legally correct and good policy. But those who have suffered from the last 11 months of scrambling, uncertainty, and expense might have a different view. It is one of the costs of our system of government – happily, in this case, so far, not a terribly high cost."