In a unanimous opinion, the United States Supreme Court (“Court”) recently held that the False Claims Act’s (“FCA”) scienter requirement refers to a defendant’s knowledge and subjective beliefs, rather than what a hypothetical reasonable person could have known or believed.  As supported by the text of the FCA itself and by its common‑law roots, the Court explained that the “focus is what a defendant thought when submitting a claim—not what a defendant may have thought after submitting it.”  Consequently, the Court vacated the holding of the Seventh Circuit and remanded the matter for further proceedings consistent with the Court’s opinion.  Because the Seventh Circuit had affirmed a Federal district court’s grant of the defendants’ motions for summary judgment, the Court’s opinion effectively revives the FCA claim against the defendants.