One of the functions of the Supreme Court is to determine whether precedent set by lower courts is Constitutional, and if it isn't, then the Court renders the precedent invalid. If and when the Court ever actually rules on the question, we will see then whether or not any of the established precedent will stand. If they rule that the 14th amendment does not apply to corporations, which they have the power to do, then all of the legal precedent that has given corporations the same rights as human beings under the 14th amendment in the past will become null and void.