One of the wonderful (as in, it makes one wonder) and frustrating (which needs no explanation) aspects of patent law is that just when you think a question is settled it either isn't or.
On November 15th, the Federal Circuit handed down its opinion affirming all aspects of the District Court's decision in Pharmacyclics LLC v. Alvogen, Inc. The case illustrates once.
Almost four years ago, in a relatively rare occurrence based on there being an insufficient factual record to permit proper appellate review, the Federal Circuit vacated a District.