"Now, however, the Federal Circuit's attitude seems to have
changed. The biggest factor, I suspect, is that after a quarter
century of ignoring patent law, the Supreme Court has handed down a
series of unanimous decisions overturning Federal Circuit
precedents and harshly criticizing the court's permissive patent
jurisprudence. That, combined with the avalanche of bad press,
seems to have convinced the Federal Circuit that the standards for
patenting needed to be tightened up."