Minerva Surgical, Inc. v Hologic, Inc was a United States Supreme Court case dealing with the principle of assignor estoppel and its application. The Supreme Court reaffirmed the principle of assignor estoppel, however with the exception that the doctrine is only applied when assignors assertions are actually consistent with previous representations as to the patent. The majority decision was written by Justice Kagan, with Justice Alito and Justice Barrett filing separate dissenting opinions.