McDonnell Boehnen Hulbert & Berghoff LLP partner Kevin Noonan, Ph.D. authored a DDN News article dated April 2020 entitled, “The question of expert testimony in patent cases.” When is an expert not an expert? In patent litigation the answer is (usually) simple: when she hasn’t been qualified as an expert according to the rules of civil litigation. And a defendant in a recent infringement lawsuit found that out the hard way, when its success in invalidating claims to the asserted patents was overturned on appeal at the Federal Circuit. view the article