delivered the opinion of the Court.
Sunburst Oil & Refining Company, the respondent, brought suit against petitioner, Great Northern Railway Company, to recover payments claimed to be overcharges for freight. The charges were in conformity with a tariff schedule approved by the Railroad Commission of Montana for intrastate traffic. After payment had been made, the same Commission which had approved the schedule held, upon a complaint by the shipper, th'at the ratesi so approved were excessive and unreasonable. In this action to recover the excess so paid, the shipper recovered a judgment which was affirmed upon appeal.
By a statute of Montana the Board of Railroad Commissioners is empowered to fix rates of carriage for intrastate shipments. The rates thereby established are not beyond recall. They may be changed by the Board itself on the complaint either of shipper or of carrier if found to be unreasonable. Revised Codes of Montana, § 3796. In an action against the Board they may be set aside upon a like showing by a judgment of the court. §§ 3809, 3810. Until changed or set aside, they “ shall prima facie be deemed to be just, reasonable and proper.” § 3810.
The meaning of the statute was considered by the Supreme Court of Montana in a cause determined in May, 1921.
Doney
v.
Northern Pacific Ry. Co.,
The procedure there outlined was followed by this respondent. It filed a complaint with the Board to the effect that the existing tariff for the carriage of crude petroleum distillate was excessive and unreasonable in that the rate of 20% cents was based upon an estimated weight of 7.4 pounds per gallon, whereas the actual weight is not more than 6.6 pounds per gallon. The Board sustained the complaint. In doing so it ruled, in conformity with the decision in the Doney case, that the published schedule prescribed the minimum and the maximum to which carrier and shipper were required to adhere while the schedule was in force, but that by the true construction of the statute the duty of adherence was subject to a condition or proviso whereby annulment or modification would give a right of reparation for the excess or the deficiency. The revision of the tariff was followed by this suit against the carrier, and later by a judgment for the shipper which is now before us for review.
The appeal to the Supreme Court of Montana was heard at the same time as an appeal in another cause involving a like question, and the two were decided together though with separate opinions.
Montana Horse Products Co.
v.
Great Northern Ry. Co.,
The subject is likely to be clarified if we divide it into ' two branches. Was a federal right infringed by the action of the trial court in adhering to the rule imposed upon it in the Doney case by the highest court of the state? If there was no infringement then, did one come about later when the Supreme Court of Montana disavowed the rule of the Doney case for the future, but applied it to the past?
The trial court did not impair a federal right by giving to a statute of the state the meaning that had been ascribed to it by the highest court of the state, unless such impairment would have resulted if the meaning had been written into the statute by the legislature itself. But plainly no such consequence would have followed if that course had been pursued. The
Doney
case was decided, as we have seen, in 1921. The transactions complained of occurred between August, 1926, and August, 1928. Carrier and shipper understood at that time that
*362
the rates established by the Commission as the delegate of the legislature were provisional and tentative. Valid for the time being the rates indubitably were, a prop for conduct while they stood, but the prop might be removed, and charges, past as well as present, would go down at the same time. By implication of law there had been written into the statute a notice to all concerned that payments exacted by a carrier in conformity with a published tariff were subject to be refunded if found thereafter, upon sufficient evidence, to be excessive and unreasonable. The Constitution of the United States would have nothing to say about the validity of a notice of that tenor written in so many words into the body of the act. Carrier and shipper would be presumed to bargain with each other on the basis of existing law.
Coombes
v.
Getz,
Arizona Grocery Co.
v.
Atchison, T. & S. F. Ry. Co.,
If the carrier did not suffer a denial of due process through the action of the trial court in subjecting the published tariff to the doctrine of the Doney case then standing unimpeached, the petitioner, to prevail, must be able to show that a change was brought about through something done or omitted by the Supreme Court of Montana in deciding the appeal.
We think the posture of the case from the viewpoint of constitutional law was the same after the decision of the appeal as it was after the trial. There would certainly have been no denial of due process if the court in affirming the judgment had rendered no' opinion or had stated in its opinion that the Doney case was approved. The petitioner is thus driven to the position that the Constitution of the United States has been infringed because the Doney case was disapproved, and yet, while disapproved, was followed. Adherence to precedent as establishing a governing rule for the past in respect of the meaning of a statute is said to be a denial *364 of due process when coupled with the declaration of an intention to refuse to adhere to it in adjudicating any controversies growing out of the transactions of the future.
We have no occasion to consider whether this division in time of the effects of a decision is a sound or an unsound application of the doctrine of
stare decisis
as known to the common law. Sound or unsound, there is involved in it no denial of a right protected by the federal constitution. This is not a case where a court in overruling an earlier decision has given to the new ruling a retroactive bearing, and thereby has made invalid what was valid in the doing. Even that may often be done, though litigants not infrequently have argued to the contrary.
Tidal Oil Co.
v. Flanagan,
We think the federal constitution has no voice upon the subject. A state in defining the limits of adherence to precedent may make a choice for itself between the principle of forward operation ,and that of relation backward. It may say that decisions of its highest court, though later overruled, are law none the less for intermediate transactions. Indeed there are cases intimating, too broadly (cf.
Tidal Oil Co.
v.
Flanagan, supra),
that it
must
give them that effect; but never has doubt been expressed that it
may
so treat them if it pleases, whenever injustice or hardship will thereby be averted.
Gelpcke
v.
Dubuque,
There is still to be considered a question of jurisdiction which has been reserved till this stage of the opinion, for the answer to it becomes easier after a consideration of the merits has brought into clear relief the challenge to the judgment. The first mention of the Fourteenth Amendment to be found in the record is in the petition for rehearing, where also there is- a statement that the constitutional question was presented on the first hearing of the appeal and is now renewed and amplified. The answer to the petition for rehearing by counsel for the respondent is also in the record and contains what is in substance an admission that the constitutional point had been duly made at the time and in the manner stated by the moving party. The court in denying the application did so by reference to its opinion on a similar motion in a companion suit decided at the same time
(Montana Horse Products Co.
v.
Great Northern Ry. Co., supra),
and nowhere in that opinion did it contest the statement of counsel that the effect of the Fourteenth Amendment had been argued at every stage. We have then in the record what is in essence the stipulation of counsel followed by the acquiescence of the court. Whether this without more avoids the application of the general rule that a constitutional question is urged too late if put forward for the first time upon a petition for rehearing
(American Surety Co.
v.
Baldwin, ante,
p. 156;
Godchaux Co.
v.
Estopinal,
The judgment of the Supreme Court of Montana is accordingly
Affirmed.
Notes
Other cases have been collected in the writings of learned authors: Von Moschzisker, Stare Decisis in Courts of Last Resort, 37 Harv. L. Rev. 409, 421; Freeman, Retroactive Operation of Decisions, 18 Col. L. Rev. 230; Carpenter, Court Decisions and the Common Law, 17 Col. L. Rev. 593; also 29 Harv. L. Rev. 80.
Cf. Gray, Nature and Sources of the Law, §§ 535-550; Holmes, J., in
Kuhn
v.
Fairmont Coal Co.,
