delivered the opinion of the Court.
In this action under the Anti-Trust Laws (15 U. S. C., §§ 1, 15) for the recovery of treble damages, the Terminal Warehouse Company, petitioner in' this court, accuses a competitor, the Merchants Warehouse Company, and the Pennsylvania Railroad Company, an interstate com *504 mon carrier, of an unlawful combination in restraint of trade and commerce.
, The business of Merchants Warehouse Company, which for brevity will be spoken of as Merchants, began in January, 1887. Its site was the City of Philadelphia. At the beginning there were two warehouses, both in convenient proximity to the Pennsylvania’s tracks and terminals. Other buildings were added from time to time by purchase or by lease to serve other sections of the city. From the outset Merchants had contracts with Pennsylvania for privileges and payments special to itself. These are the contracts of which Terminal complains. They were renewed as they ran out from 1887 to 1931, a separate contract being made with reference to each building. For present purposes a summary of one contract will serve as a summary of all, though they differ in particulars. For illustration we choose the contract of January 25, 1917, which has to do with the warehouse at Water and Chestnut Streets. By this contract Pennsylvania agrees to maintain tracks adjacent to' the warehouse and to make payments at stipulated rates for services rendered by the warehouse in the receipt and delivery of freight. While the contract is in force, there is to be no allowance for such services to any other warehouse company in the City of Philadelphia. In return Merchants agrees to give a preference to Pennsylvania over other lines in the use of its facilities; to load and unload freight promptly and efficiently; to collect charges due for incoming freight, and to be responsible to the railroad company therefor.
No secret was made of -the existence of this contract or of any of the others. On the contrary, the substance of the whole arrangement was set forth in the tariffs'of the railroad,filed with the Interstate Commerce.Commission and open to the public. Pennsylvania there showed that it liad designated the’warehouses of Merchants as stations for the -receipt and delivery of freight. It also
*505
showed the amount of the payments and allowances to be made to Merchants for services in handling freight at the stations so designated. For many years the practice went unchallenged by any agency of government. The assumption was that the warehouses, though not owned by Pennsylvania, were, none the less, public freight stations supplied by a contractor
(United States
v.
Baltimore & Ohio R. Co.,
Terminal, a rival warehouse, organized in 1904, was quick to occupy the vantage-ground left open by that ruling. It laid before the Interstate Commerce Commission a complaint charging Pennsylvania with unjust discrimination in the practices described. It asked that a restraining order protect it for the future, and that there be an award of reparation for losses suffered in the past. There were separate complaints as to the acts of other railroads (The Baltimore & Ohio and the Reading), which had terminal arrangements with warehouses of their own *506 selection. Neither of these other roads had given a preference to Merchants, and none of the three was acting in concert with any other. The Commission, adhering to its ruling in the McCormick Warehouse case, held that the designated warehouses were in truth not public freight stations, however the carriers might style them. From this it followed that allowances and special privileges accorded on the footing of an agency relation would have to be abandoned. Gallagher v. Pennsylvania R. Co., 160 I. C. C. 563. The railroads were required to cancel any tariff provisions whereby “the facilities of the contract warehouses” were made “a part of the respective station facilities” of the lines affected by the order. They were required to “cease and desist” from publishing or making the discriminatory privileges and allowances growing out of the attempt to treat the warehouse companies as agents. On the other hand, the Commission refused an award of reparation. “The evidence is far too vague and indefinite to warrant the conclusion that complainants have suffered actual pecuniary loss attributable directly to the alleged unlawful practices.”
The carriers, together with Merchants and other warehouse companies interveners in the proceeding, brought suit in a federal court (three judges sitting) to vacate the order of the Commission. The bills of complaint were dismissed, one judge dissenting.
44
F. (2d) 379. Upon appeal to this court the decree was affirmed.
Merchants Warehouse Co.
v.
United States,
We have seen that Terminal asked for reparation as well as for a restraining order at the hands of the Commission. There is no doubt that the Commission had jurisdiction in response to that request to make an award against the railroad for damages suffered by the complainant as a result of the unlawful practices. 49 U. S. C., §§ 8, 9, 16 (1) (2);
Interstate Commerce Comm’n
v.
United States,
Petitioner, not satisfied to proceed under the Commerce Act, put that remedy aside and brought suit under the Sherman and Clayton Acts, hoping by that manoeuvre to charge both carrier and warehouse, and to charge them with treble damages. Every act of wrongdoing proved in the new suit to have been committed by the defendants was proved against them also (with unsubstantial exceptions) in the case'before the Commission. Now as before, the head and front of their offending is the use of the warehouses as stations for the carrier with the allowances and privileges,' such as exemption from demur-rage, growing out of that relation. What is true.of the offense is true also of its consequences. There has been no proof of any loss that would not be provable in equal measure in proceedings under the Commerce Act upon a claim for reparation. Interstate Commerce Comm’n v. United States, supra; Louisville & Nashville R. Co. v. Ohio Valley Tie Co., supra. Terminal does not show that there was a conspiracy to establish a. monopoly either *510 of transportation by Pennsylvania or of storage by Merchants, much less that a monopoly was actually attained. There was no monopoly of transportation, for the statistics make it plain that the competing lines in Philadelphia had a large percentage of the business of carrying storage freight. Moreover, Terminal is not here as the representative of the railroads, and may not vindicate, their grievances, if grievances there are. More important is the consideration whether there has been a monopoly of storage. There are many warehouses in Philadelphia for the storage of railroad freight. Neither Merchants nor any other company has been able to engross the business or has even attempted to engross it. During the years of the unlawful practices, Merchants’ business declined proportionately to the whole, and Terminal’s increased, as did also that of other warehouses,- so far as the record supplies us with the relevant statistics. Indeed, petitioner does not even claim that by reason of the defendants’ acts, it failed to get business that would otherwise have come to it. If there was any claim for such damages at the beginning it was explicitly renounced. . What petitioner contends and has contended for is this and nothing more, that to hold and attract customers it had to keep its charges down below the normal rate, diminishing its profit to the extent of the reduction. In a word, its only damages are those resulting, in its view, from the allowances for loading and unloading or like discriminatory acts, and not from any conspiracy transcending these -particulars, a conspiracy of which allowances and privileges are a symptom or an incident.
Upon the basis of that evidence the trial judge left it to the jury to say whether Terminal was a sufferer from an unlawful combination in restraint of trade and commerce. The jury found a verdict for $136,125 against both defendants. This verdict was trebled by the court, *511 with, the addition of a counsel fee ($27,000), the whole judgment thus amounting to $437,338.81. There was an appeal to the Circuit Court of Appeals for the Third Circuit where the judgment was reversed. The ground of the reversal was that the decision of the Commission refusing reparation was a bar to any claim for damages against either of the defendants in a suit under the AntiTrust laws as well as under the Commerce Act. 78 F. (2d) 591. This court granted a writ of certiorari to determine the scope and operation of important acts of Congress.
The order of the Commission denying reparation, though it be assumed' to be conclusive evidence in. favor of the carrier, is plainly not such evidence for the carrier’s confederate. We think it better to rest our judgment on grounds applicable to both defendants. Whether such grounds exist is the question next in order.
First. Discriminatory privileges and payments given by a carrier to a consignor or consignee are unavailing without more to make out a combination in restraint of trade or commerce within, the meaning of the Anti-Trust Laws. To lead to that result the privileges or payments must be the symptoms or incidents of an enveloping conspiracy with its own illegal ends. In the absence of such a showing a sufferer from discriminatory charges and allowances has his remedy under the Commerce Act for any damage to his business, and that remedy is exclusive against all the parties to the wrong.
Two cases in this court, though not indeed decisive, are apposite and helpful. The first,
Keogh
v.
Chicago & Northwestern Ry. Co.,
A second case pointing the same way is
United States Navigation Co.
v.
Cunard Steamship Co.,
What was said in these opinions is precisely applicable here. If a sufferer from the discriminatory acts of carriers by rail or by water may sue for an injunction, under -the Clayton Act without resort in the first instance to the regulatory commission, the unity of the system of regulation breaks down beyond repair.
Texas & Pacific Ry. Co.
v.
Abilene Cotton Oil Co.,
In thus holding we do not intimate that never in any circumstances can a carrier become a party to a conspiracy in restraint of trade or commerce with liability for treble damages. This has been made, plain already. We enlarge on it for greater certainty. Wherein the case is now deficient will be made clearer by example. One may suppose a business of a manufacturer which has assumed the form and size of a monopoly, or if not already at that stage, is well upon the road thereto. Cf.
Standard Oil Co.
v.
United States,
None of these assumptions affects the case at hand. For reasons already stated there was no conspiracy to monopolize the storage business to the destruction of Terminal or of others similarly situated. There was no conspiracy to impose upon that business a burden of any kind, except to'the extent that the enjoyment of a preference might increase the opportunities for profit of the warehouse so preferred. Of any combination more far-reaching, more inclusive in its aims, there is silence in the record after every reasonable inference has been drawn from its pages. On the contrary, the history of the relation between Pennsylvania and Merchants indicatés strongly that the illegal discrimination, far from being a symptom of a larger combination, was the product of a mistake;of law, which was shared for many years by the regulatory commission till the decision in McCormick’s case laid down another rule. The mistake does not- relieve the carrier from liability for the concession of a privilege which has turned out to be forbidden. It serves, however, as a reminder that the liability must be kept within reasonable limits, and that a preference innocent in purpose should not be magnified into a token of a circumambient conspiracy.
We conclude that for Merchants as well as for Pennsylvania whatever liability was incurred through the forbidden discrimination was under the act to regulate commerce and not for treble damages.
Second. The case having been submitted to the jury on the theory that apart- from the unlawful preference *517 there was evidence of a conspiracy in restraint of trade and commerce, and the complaint having been framed on that theory and no other, the suit should have been dismissed as to each of the defendants.
The judgment- of the Court of Appeals reversing the judgment of the District Court is accordingly
Affirmed.
Notes
“Inducing unjust discrimination; penalty; liability for damages. If any such person, or any officer or agent of any such corporation or company, shall, by payment of money or other thing of value, solicitation, or otherwise, induce or attempt to induce any common *509 carrier subject to the provisions of this chapter, or any of its officers or agents, to discriminate unjustly in his, its, or their favor as against any other consignor or consignee in 'the transportation of property, or shall aid or abet any common carrier in any such unjust discrimination, such person or such officer or agent of such corporation or company shall be deemed guilty of a misdemeanor, and shall, upon conviction 'thereof in any court .of the United States of competent jurisdiction within the district in which such offense was committed, be subject to a fine of not exceeding $5,000, or imprisonment in the penitentiary for a term of not exceeding two years, or both, in the discretion of the court, for each offense; and such person, corporation, or company shall also, together with said common carrier, be liable, jointly or severally, in an action to be brought by any consignor or consignee discriminated against in any court of the United States of competent jurisdiction for all damages caused by or resulting therefrom.”
