NY Times: “In One Flaw, Questions on Validity of 46 Judges” (they could have written a better headline):

But John F. Duffy, who teaches at the George Washington University Law School, is a different kind of law professor. He has discovered a constitutional flaw in the appointment process over the last eight years for judges who decide patent appeals and disputes, and his short paper documenting the problem seems poised to undo thousands of patent decisions concerning claims worth billions of dollars.

Uh-oh. According to TTABlog.