Leonard Lockhard said this quote

“ The Supreme Court is composed of two groups known as the Infallible Five and the Furious Four. The first group writes those majority decisions on patent law that have brought patent lawyers to their present condition. The second groups writes the dissenting opinions, trying to hold to the law as it was laid down by the first groups the week before. The composition of each group shifts from decision to decision, so that no one justice is right all the time. They sort of pass the infallibility around to keep peace in the family. -- The Improbable Profession ”