Famous Brands, Inc. (Famous) brought this diversity action, claiming that it had an enforceable, exclusive contract for South Dakota distribution rights to Everclear grain alcohol, which is bottled by the David Sherman Corporation (Sherman). Sherman withdrew Everclear from Famous and granted South Dakota distribution rights to a third party, Premier Wine and Spirits, when Famous did not carry Sherman's entire line of liquors. Famous sued to enforce the alleged contract and brought additional counts for deceit and violation of the antitrust laws.

The district court1 granted defendant Sherman's motion for summary judgment on all counts. The court had before it depositions, documents, affidavits, and the record from an earlier preliminary injunction hearing, at which Sherman prevailed. For the purposes of its summary judgment motion, Sherman accepted the plaintiff's evidence in its entirety. Sherman argues that based on the "undisputed" facts, Famous' claims are insufficient as a matter of law. The issue on appeal is whether summary judgment for Sherman was proper on each of the three counts raised in Famous' complaint. We affirm in part and reverse in part.

In 1982 Famous, a liquor wholesaler in Sioux Falls, South Dakota, began negotiating to buy Midland Distributors, another Sioux Falls wholesale house. After litigation2 interrupted this attempt once, in late 1983 Famous resumed its effort to acquire Midland. According to Lynn Johnson, president of Famous, the ultimate purchase depended on Midland's suppliers' consent to continue to supply and do business with any purchaser of Midland.3 He stated that the supply lines were "like assets."

Numerous contacts between Famous and Sherman were made, primarily because Sherman controlled Midland's supply of Everclear, a trademarked product that held over ninety percent of the grain alcohol market in South Dakota. On November 1, 1983, Paul Lux, the president of Sherman, wrote a letter to Famous stating: "[I]f [the Midland purchase] happens, I want you to know that we will be more than happy to have you distribute Everclear alcohol and any other brands that Midland will be selling for us." Later, Lux told Lynn Johnson that Famous could "count on" Sherman after Famous' purchase of Midland took effect.4 On appeal, Sherman concedes these communications. Based on this background, according to Johnson's testimony, "Everclear was one of the franchises that we paid blue sky for."

Thereafter Sherman supplied primarily Everclear to Famous until February 20, 1985, when representatives of Sherman told Famous that it was being terminated because "you will not handle our proprietary lines." According to Lux, Sherman requires all its wholesale distributors to carry all of its lines. Famous refutes this by evidence that its successor to the Sherman line, Premier Wine and Spirits, carries only a few of the Sherman products. Midland also had carried only a few of Sherman's products besides Everclear.

Both parties, as reflected through the testimony of Johnson and Lux, indicate that a distributorship can continue indefinitely unless mutual problems cannot be resolved. Famous relies on this industry practice or custom for its claim that Sherman's statements created a perpetual, exclusive contract to distribute Everclear grain alcohol in South Dakota.

Based on the historical facts outlined above, the district court granted summary judgment for Sherman on two grounds: (1) the terms of the contract were indefinite; and (2) there was no mutuality of obligation. We find the district court erred in doing so.

Regarding the first point, South Dakota contract law recognizes the validity of implied contracts. See S.D. Codified Laws Ann. Sec. 53-1-3 (1980 rev.). As the South Dakota Supreme Court has explained:

A contract is implied in fact where the intention as to it is not manifested by direct or explicit words by the parties, but is to be gathered by implication or proper deduction from the conduct of the parties, language used, or acts done by them, or other pertinent circumstances attending the transaction.

Mahan v. Mahan, 80 S.D. 211, 121 N.W.2d 367, 369 (1963). An earlier South Dakota case held that "the facts are viewed objectively, and if a party voluntarily indulges in conduct reasonably indicating assent he may be bound even though his conduct does not truly express the state of his mind." Federal Land Bank v. Houck, 68 S.D. 449, 4 N.W.2d 213, 219-20 (1942); see also Mitzel v. Hauck, 78 S.D. 543, 105 N.W.2d 378, 380 (1960).

An agreement is not too indefinite to form a contract when the parties operated under it for over a year, as Famous and Sherman did. The evidence shows that Sherman readily supplied Everclear to Famous for distribution and Famous carried out its promotion and selling of Everclear throughout the year. Distributorship agreements are by their very nature indefinite, often being made definite only by the conduct of the parties, which reflects their intentions. We find under South Dakota law sufficient circumstances to at least create a jury question as to the existence of an implied contract between the parties.

Contracts should be construed according to the construction placed on them by the parties, as demonstrated by their contemporaneous and subsequent conduct. See Malcolm v. Malcolm, 365 N.W.2d 863, 865 (S.D.1985); Huffman v. Shevlin, 76 S.D. 84, 89, 72 N.W.2d 852, 855 (1955); Janssen v. Muller, 38 S.D. 611, 162 N.W. 393, 394 (1917).5 To apply this doctrine to the present question of contract formation would uphold the long-standing South Dakota policy favoring validation of contractual relations. See Kuhfeld v. Kuhfeld, 292 N.W.2d 312, 315 (S.D.1980) (citing Trumbauer v. Rust, 36 S.D. 301, 154 N.W. 801 (1915); Sarles v. Sharlow, 5 Dakota 100, 37 N.W. 748 (S.D.1888); Cheatham v. Wilbur, 1 Dakota 335, 46 N.W. 580 (S.D.1876)).

To summarize, when an informal agreement is followed by conduct arguably pursuant to that agreement, the fundamental question of definiteness comes down to the understanding and intention of the parties: did they intend to consent to a continual,6 binding distributorship agreement? We find this to be a genuine issue of material fact that must be decided by the jury.

The trial court also found mutuality of obligation lacking in that Famous could cease doing business at any time, while Sherman allegedly could not. Here again we cannot agree. As this court stated in Clausen & Sons, Inc. v. Theo. Hamm Brewing Co., 395 F.2d 388 (8th Cir.1968), " '[m]utuality of obligation' is only a semantical exercise surrounding the real determinant of a contract, namely, consideration." Id. at 389. Although Clausen applied Minnesota law, it is clear that South Dakota law is supportive of the Clausen rationale. As stated in Lien v. Northwestern Engineering Co., 73 S.D. 84, 39 N.W.2d 483, 488-89 (1949): "Where there is an agreement founded on a consideration, it is not invalid for want of mutuality because it is obligatory on one party and optional on the other."

Our inquiry thus turns to whether Famous produced sufficient evidence from which a factfinder could have found consideration. Under S.D.Codified Laws Ann. Sec. 53-6-1, "consideration" is defined as "[a]ny benefit conferred or agreed to be conferred upon the promisor by any person to which the promisor is not lawfully entitled, or any prejudice suffered or agreed to be suffered by such person, other than such as he is at the time of consent lawfully bound to suffer as an inducement to the promiser."

Famous points to its implied promise to promote Everclear as consideration for Sherman's "promise," a theory twice accepted by the Wisconsin Supreme Court. See Simon Bros. Co. v. Miller Brewing Co., 83 Wis. 2d 701, 266 N.W.2d 369, 372-73 (1978); California Wine Ass'n. v. Wisconsin Liquor Co., 20 Wis. 2d 110, 121 N.W.2d 308, 314 (1963). Sherman, on the other hand, dismisses any promise to promote as a "bootstrap" onto a nonexistent promise by Sherman. We read South Dakota law to support the proposition that if Sherman did promise to supply Everclear to Famous, then an implied return promise7 by Famous to promote it would be consideration. Famous' promise would be contingent on Sherman fulfilling its promise to sell. Cf. Endres v. Warriner, 307 N.W.2d 146, 149 (S.D.1981) (finding adequate consideration in promise contingent on third party action). Contrary to Sherman's arguments, this is not an "illusory" promise. As Justice (now Circuit Judge) Wollman wrote for the South Dakota Supreme Court: "A promise is illusory 'only if it in no way limits the promisor's future action. * * * [Where a party has] impliedly promised to use his best effort [to carry out the goals of the contract] * * * there was adequate consideration." Id. (quoting Douglas v. City of Dunedin, 202 So. 2d 787, 788 (Fla.Dist.Ct.App.1967)).

This arrangement also could be regarded as a "requirements" contract, under which Sherman promised to fill all of Famous' Everclear needs in return for Famous' promise to buy all of its Everclear from Sherman. South Dakota law recognizes requirements contracts. See Teigen Const., Inc. v. Pavement Specialists, Inc., 267 N.W.2d 574, 578 (S.D.1978); S.D.Codified Laws Ann. Sec. 57A-2-306(1) (applicable in transactions covered by the Uniform Commercial Code). Even if the promise to buy is implied, this is not invalid for lack of the promise to sell mutuality. Teigen, 267 N.W.2d at 578; see also Sulzbach v. Town of Jefferson, 83 S.D. 156, 155 N.W.2d 921, 923 (1968). Some other form of consideration, however, must be shown to support the requirements contract. Under the Uniform Commercial Code, the prospective buyer's good faith in filling all of its requirements through the seller is deemed sufficient consideration to support the contract.8 This rationale would support a finding of consideration if a jury finds facts indicating a promise by Sherman.

Another alternative theory of consideration is promissory estoppel. Under this theory, Famous can show that by purchasing Midland it justifiably and detrimentally relied on Sherman's promises to supply Everclear. The promissory estoppel doctrine holds that "[a] promise which the promisor should reasonably expect to induce action or forbearance on the part of the promisee or a third person and which does induce such action or forbearance is binding if injustice can be avoided only by enforcement of the promise." Restatement (Second) of Contracts Sec. 90(1) (1981); see Northwestern Eng'g Co. v. Ellerman, 69 S.D. 397, 10 N.W.2d 879, 883 (1943) (adopting promissory estoppel in South Dakota); Valley Bank v. Dowdy, 337 N.W.2d 164, 165-66 (S.D.1983) (applying promissory estoppel theory); Clausen, 395 F.2d at 390 (same). Famous has produced sufficient facts from which a reasonable factfinder could infer reasonable reliance by Famous that Sherman should have anticipated. Thus, under a promissory estoppel theory as well as ordinary consideration, the district court erred in granting Sherman's motion for summary judgment.

Fraudulent intent is an element of deceit under S.D.Codified Laws Ann. Secs. 20-10-1 and 20-10-2.9 In the present situation, to avoid summary judgment Famous must offer some evidence of Sherman's deceitful intent when Sherman made its alleged promise. Cf. Celotex Corp. v. Catrett, --- U.S. ----, 106 S. Ct. 2548, 2553, 91 L. Ed. 2d 265 (1986) (summary judgment was proper when the plaintiff produced no evidence on an essential element of her claim). Under the present state of the record the only "evidence" is the fact that Sherman later terminated Famous. This conduct fails to show contemporaneous intent; in fact, the evidence indicates that only after it discovered that Famous wasn't carrying its various products, did Sherman decide to take Everclear away.

Thus, we conclude that Famous has failed to produce any evidence from which an inference of deceit is possible. When the plaintiff fails to meet its burden of production, summary judgment is proper.

In its antitrust count, Famous claims that Sherman tied the sale of Everclear, a product desired by Famous, to the purchase of other products Famous did not desire. Tying arrangements are one category of anticompetitive activity regarded as per se illegal under section 1 of the Sherman Act, 15 U.S.C. Sec. 1 (1982), and section 3 of the Clayton Act, 15 U.S.C. Sec. 14 (1982).10 "A tie exists when a seller, having a product which buyers want (the 'tying product'), refuses to sell it alone and insists that any buyer who wants it must also purchase another product (the 'tied product')." L. Sullivan, Antitrust Sec. 150, at 431 (1977). The district court rejected Famous' antitrust claims because Famous did not buy the tied products.

A severe hurdle faces Famous in its attempt to prevail under section 1 of the Sherman Act; Famous must show a contract, combination, or conspiracy. In Monsanto Co. v. Spray-Rite Serv. Corp., 465 U.S. 752, 104 S. Ct. 1464, 79 L. Ed. 2d 775 (1984), the Supreme Court reiterated the "distinctions" that are "at the center of this and any other distributor-termination case." See id. at 760-61, 104 S.Ct. at 1469-70. As to the first distinction,11 the Court wrote:

[T]here is the basic distinction between concerted and independent action--a distinction not always clearly drawn by parties and courts. Section 1 of the Sherman Act requires that there be a "contract, combination ... or conspiracy" between the manufacturer and other distributors in order to establish a violation. 15 U.S.C. Sec. 1. Independent action is not proscribed. A manufacturer of course generally has a right to deal, or refuse to deal, with whomever it likes, as long as it does so independently. United States v. Colgate & Co., 250 U.S. 300, 307 [39 S. Ct. 465, 468, 63 L. Ed. 992] (1919); cf. United States v. Parke, Davis & Co., 362 U.S. 29 [80 S. Ct. 503, 4 L. Ed. 2d 505] (1960).

Id. at 761, 104 S.Ct. at 1469.

Monsanto thus reaffirmed the doctrine of United States v. Colgate & Co., 250 U.S. 300, 307, 39 S. Ct. 465, 468, 63 L. Ed. 992 (1919):

The purpose of the Sherman Act is to prohibit monopolies, contracts and combinations which probably would unduly interfere with the free exercise of their rights by those engaged, or who wish to engage, in trade and commerce--in a word to preserve the right of freedom to trade. In the absence of any purpose to create or maintain a monopoly, the act does not restrict the long recognized right of [a] trader or manufacturer engaged in an entirely private business, freely to exercise his own independent discretion as to parties with whom he will deal. And, of course, he may announce in advance the circumstances under which he will refuse to sell. "The trader or manufacturer, on the other hand, carries on an entirely private business, and can sell to whom he pleases * * *." United States v. Trans-Missouri Freight Association, 166 U.S. 290, 320 [17 S. Ct. 540, 551, 41 L. Ed. 1007 (1897) ].

See also Russell Stover Candies, Inc. v. FTC, 718 F.2d 256, 259-60 (8th Cir.1983) (following Colgate ).

Later in the Monsanto opinion the Court discussed the evidentiary standards applicable under section 1: "[T]he antitrust plaintiff should present direct or circumstantial evidence that reasonably tends to prove that the manufacturer and others 'had a conscious commitment to a common scheme designed to achieve an unlawful objective.' Edward J. Sweeney & Sons, [Inc. v. Texaco, Inc., 637 F.2d 105, 111 (3d Cir.1980), cert. denied, 451 U.S. 911, 101 S. Ct. 1981, 68 L. Ed. 2d 300 (1981) ]." 465 U.S. at 764, 104 S.Ct. at 1471.

Famous failed to show that some distributor agreed to purchase tied products in return for availability of Everclear. As the district court suggested, because Famous at all times refused to purchase tied products from Sherman, no concert of action existed between them. See Unijax, Inc. v. Champion Int'l, Inc., 683 F.2d 678, 685 (2d Cir.1982) ("Actual coercion by the seller that in fact forces the buyer to purchase the tied product is an indispensable element of a tying violation."). Thus, Famous is left to rely on Sherman's later relationship with Premier Wine and Spirits, the successor to Famous, as evidence of a tying contract. See Perma Life Mufflers, Inc. v. International Parts Corp., 392 U.S. 134, 142, 88 S. Ct. 1981, 1986, 20 L. Ed. 2d 982 (1968) (plaintiff can show antitrust combination when third party acquiesced to defendant's demands); Black Gold, Ltd. v. Rockwool Indus., Inc., 729 F.2d 676, 686 (10th Cir.1984) (applying Perma Life in tying case).

There is no illegal concert of action if Sherman simply substituted Premier for Famous in an attempt to find a more active distributor of Sherman's products. Unijax, 683 F.2d at 685; Dreibus v. Wilson, 529 F.2d 170, 173-74 (9th Cir.1975); Ricchetti v. Meister Brau, Inc., 431 F.2d 1211, 1214-15 (9th Cir.1970), cert. denied, 401 U.S. 939, 91 S. Ct. 934, 28 L. Ed. 2d 219 (1971). The Second Circuit in Unijax termed a similar withdrawal of the desired product from an unwilling distributor "nothing more than aggressive salesmanship." 683 F.2d at 685. We find no evidence in the record that Premier acquiesced in any type of tying relationship. The fact that Premier later may have distributed some of Sherman's other products is inconclusive at best. In fact, the record shows, and Famous acknowledges, that Premier primarily purchased Everclear from Sherman. There is no evidence that Premier and Sherman acted in concert to restrict competition in the sale of any liquor products in South Dakota.

Section 3 of the Clayton Act, 15 U.S.C. Sec. 14 (1982), proscribes sales made on the condition that the buyer not use or deal in competing products. Just as in section 1 of the Sherman Act, this provision requires proof that a buyer acquiesced in such an arrangement. There is no evidence of a contract under which Famous or Premier would deal exclusively in Sherman's products. All available evidence is to the contrary; Famous concedes that it sold other products, and Famous apparently has abandoned any effort to show that Premier was forced to buy and sell only Sherman's products. The record indicates instead that Sherman would have been satisfied to "share" a distributor, as long as that party aggressively marketed all of Sherman's products.

Under Celotex we must conclude that there is no genuine issue of material fact outstanding as to the antitrust claims.

Genuine issues as to material facts remain only on the contract claim. The district court in its short statement from the bench assumed some facts, without the aid of a full trial. It is true that the summary judgment procedure is intended to avoid unnecessary trials. In this case, however, we are not convinced that trial was unnecessary. While the district court may have correctly assessed the merits of the plaintiff's claims, doing so before trial left material issues of fact unsettled.

As to the deceit and antitrust claims, however, we are convinced that summary judgment was properly entered. Famous has produced no genuine issue as to any material facts on those claims and Sherman is entitled to judgment as a matter of law.

Accordingly, for the reasons discussed in this opinion, the judgment of the district court on the contract claim is reversed and remanded for trial; the judgment of the district court on the deceit and antitrust claims is affirmed.