Plaintiffs-appellants Misco, Inc., Mid-South Aluminum Company, and Everett W. Fielder (collectively referred to as “Misco”) appeal from the district court’s rulings in favor of defendants-appellees United States Steel Corporation (“USS”) and USS’ wholly-owned subsidiary Alside, Inc. on their federal antitrust and Tennessee common law and statutory breach of contract claims. On appeal, Misco alleges that the district court committed numerous errors in reaching its decisions. After carefully considering each contention, we affirm in part, reverse in part, and remand for further proceedings.
The district court assumed, without ever explicitly deciding, that the following facts taken from Misco’s complaint were true. Fielder was the sole shareholder in Mid-South Aluminum Company (Mid-South), located in Nashville, Tennessee. In 1966, Mid-South and Alside, Inc. (“Alside”) entered into an exclusive dealership agreement. Under the agreement, Mid-South in exchange for agreeing to retail Alside products was given the exclusive rights to retail Alside products in middle Tennessee. 1 In *201 June, 1969, Alside became a wholly-owned subsidiary of USS and shortly thereafter Alside approached Fielder and requested a change in the existing contract. Alside represented to Fielder that due to a change in marketing strategy Alside needed a wholesale distributor of its products in the middle Tennessee area. The representatives promised Fielder that if he undertook this obligation Alside would make him its exclusive wholesaler in the middle Tennessee area. Fielder agreed and established Misco, Inc. to perform the new contract. On July 24, 1974, executives from Alside had a meeting with Fielder and informed him that Alside was opening a warehouse in the Nashville area. Alside opened a warehouse in Nashville in September, 1974 and Misco commenced this action in April, 1978.
Misco in its complaint alleged that Alside and USS violated Section 1 of the Sherman Act, 15 U.S.C. § 1 (1982), and Sections 2(a), 2(d), and 2(e) of the Robinson-Patman Act, 15 U.S.C. §§ 13(a), 13(d), 13(e) (1982). Misco further contended that Alside breached its exclusive dealership contract with Misco and that USS wrongfully induced the breach in contravention of Section 47-50-109 of the Tennessee Code, Tenn.Code Ann. § 47-50-109 (1984). The district court dismissed Misco’s claims under Section 1 of the Sherman Act, Sections 2(d) and 2(e) of the Robinson-Patman Act, and Section 47-50-109 of the Tennessee Code for failing to state claims upon which relief could be granted. See Fed.R.Civ.P. 12(b)(6). After some discovery, the district court granted Alside’s and USS’ motion for summary judgment on Misco’s claim under Section 2(a) of the Robinson-Patman Act. Finally, following a trial on the record, the district court determined that Alside had not breached its contract with Misco. On appeal, Misco attacks all of the district court’s holdings' and argues that the district court improperly refused to consider its untimely demand for a jury trial and erroneously categorized its “requests for admissions” as interrogatories. We will consider the antitrust claims first, the state law actions second, and the procedural issues last.
A complaint may only be dismissed under Rule 12(b)(6) if the allegations in the complaint appear beyond doubt not to support a claim for which relief may be granted.
Conley v. Gibson,
Misco alleges that Alside and USS violated Section 1 of the Sherman Act by conspiring to eliminate competition in the marketing of siding. In order to state a claim under Section 1, the plaintiff must allege the existence of concerted activity.
See United States v. Colgate & Co.,
Misco also alleged in its complaint that Alside and USS violated Sections 2(d) and 2(e) of the Robinson-Patman Act. The
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gravamen of an action under either Section 2(d) or Section 2(e) is that the defendant is supplying services to one customer but not to another.
See FTC v. Fred Meyer, Inc.,
Similarly, Misco contends that Al-side and USS violated Section 2(a) of the Robinson-Patman Act by discriminating in the prices which they charged their customers. The district court granted summary judgment in Alside’s and USS’ favor on this claim. Summary judgment may only be granted if, viewing the evidence in the light most favorable to the non-moving party, there is no issue of material fact. Fed.R. Civ.P. 56(c);
SEC v. Blavin,
Section 2(a) of the Robinson-Patman Act only applies to sales which are “in commerce.” 15 U.S.C. § 13(a) (1982). The in commerce jurisdictional prerequisite is met only if one of the alleged discriminatory sales crossed a state line.
Gulf Oil Corp. v. Copp Paving Co.,
Misco asserts that the district court erred in ruling in favor of Alside and USS on its breach of contract claim. The district court relied upon two grounds in rejecting Misco’s claim: first, that Misco initially breached the exclusive dealership contract and, second, that Misco received adequate notice of the termination. Although a district court’s findings of fact must be upheld by a reviewing court unless clearly erroneous, Fed.R.Civ.P. 52(a);
Anderson v. City of Bessemer City, North Carolina,
— U.S. -,
The district court first determined that “no factual dispute” existed concerning the fact that Misco initially terminated the exclusive dealership agreement. This finding lacks any support in the record. The district court, in support of its holding, noted that Fielder admitted that he took action inconsistent with his position as Alside’s exclusive dealer on June 24, 1974, 2 exactly one month before the July 24, 1974 meeting. As the district court acknowledged in its opinion, however, Fielder took this action only after having been informed by Dan Smith, an Alside Sales Representative, that Alside planned to open a warehouse in *203 Nashville. Dan Smith in his sworn statement averred that in a meeting in February 1974, he was told by O.J. French, Alside’s Divisional Sales Manager, in the presence of two other Alside executives, Francis Fuglaar, French’s supervisor, and Bill Sauer, Vice President of Sales, that Alside was going to open a warehouse in Nashville. Besides the foregoing evidence, the only other evidence on the termination question were the depositions of Sauer and Alside’s Vice President Leshman. Leshman indicated that he was told by Sauer in March, 1974 that Alside was opening up a Nashville warehouse and maintained that he did not know if Misco had an exclusive dealership agreement with Alside. 3 Consistent with Leshman’s testimony, Sauer stated that he was responsible for the decision to open the Nashville warehouse and that he made this decision in February, 1974. In accordance with his deposition, Sauer told Fielder at the July 24, 1974 meeting that the decision to terminate Misco had been made “a month or so ago.” 4 Thus, viewing the evidence in a light most favorable to Alside, the only reasonable conclusions that can be drawn is that Al-side had determined to end Misco’s exclusive dealership before Misco took any action inconsistent with its position as Al-side’s exclusive dealer and that Misco took action only after Fielder was informed by an Alside representative that Alside planned to open a Nashville warehouse. In light of the foregoing, we conclude that the district court’s finding that Misco terminated the exclusive dealership is clearly erroneous. We, therefore, must consider the district court’s alternative ground for its decision.
The district court reasoned that since Misco received notice of Alside’s plan to open a Nashville warehouse on June 24, 1974, over two months before the warehouse opened in September, 1974, Misco had received all the prior notice to which it was entitled. Under Tennessee law, a contract lacking a durational term is terminable at will by either of the parties.
Apco Amusement Co. v. Wilkins Family Restaurants of America, Inc.,
The district court’s holding on this issue was premised upon an earlier order in which, while considering Alside’s and USS’ motion to dismiss Misco’s contract action for failing to state a claim for which relief could be granted, it noted that as a matter of law a period of thirty days, not to exceed sixty days, was reasonable notice. The determination concerning what constitutes reasonable notice, however, is a fact-specific inquiry dependent upon the length of the contractual relationship between the parties, the reliance which either party has placed upon the continuing vitality of the contractual relationship, the particular business involved, and the practices and customs in the industry. The district court, thus, erred in concluding as a matter of law that thirty days was reasonable notice without considering the specific circumstances surrounding this case. Since neither ground relied upon by the district *204 court supports its determination on Misco’s breach of contract claim, we reverse and remand this portion of the case for further proceedings.
Misco also contends that the district court erroneously determined that its action against USS for wrongfully inducing Alside to breach the exclusive dealership agreement with Misco under Section 47-50-109 of the Tennessee Code, Tenn.Code Ann. § 47-50-109 (1984), was barred by the statute of limitations. The district court initially noted that Section 47-50-109 creates a statutory treble damage remedy for wrongful inducements to breach a contract and contains no express limitations period. Thus, the district court reasoned that either Tennessee’s one year statute of limitations for “actions for statutory penalties,” Tenn. Code Ann. § 28-3-104(a) (1980), or Tennessee’s three year limitations period pertaining to actions “for injuries to personal or real property,” Tenn.Code Ann. § 28-3-105(1) (1980), would apply. In either case, the district court concluded that Misco’s action was barred since Miseo’s complaint was filed almost four years after any alleged wrongfully induced breach. Misco maintains that this Court’s decision in
City of Atlanta v. Chattanooga Foundry & Pipeworks,
In
Chattanooga Foundry,
this Court applied Tennessee’s ten year catchall statute of limitations to an action brought under Section 1 of the Sherman Act.
5
The court in analyzing the applicable Tennessee statutes, which are almost identical to the current versions of Sections 28-3-104(a), 28-3-105(1), and 28-3-110(3) of the Tennessee Code, proceeded in two steps. First, the Court held that the treble damage provision of the Sherman Act was not a statutory penalty within the meaning of the predecessor to Section 28-3-104(a). Next, the Court drew a distinction between injuries to business and injuries to property.
Chattanooga Foundry,
Misco argues that the district court erred in refusing to grant its untimely motion for a jury trial. Although Rule 38(b), Fed.R.Civ.P. 38(b), requires that a demand for a jury trial be made within 10 days of the last pleading directed to the issue, a district court “in its discretion” under Rule 39(b), Fed.R.Civ.P. 39(b), may grant a late motion for a jury trial. A district court has broad discretion in ruling on a Rule 39(b) motion.
Swofford v. B & W, Inc.,
In this case, Alside and USS answered Misco’s complaint on July 10, 1978. Misco did not file its demand for a jury trial until almost three months later on October 6, 1978. Misco has given no reason why it was well over two months late in requesting a jury trial. Moreover, the district court, in denying the motion, reasoned that, due to the complexity of the case, a jury trial would be less efficacious than a bench trial. Under these circumstances, we do not believe that the district court abused its discretion in denying the Rule 39(b) motion.
Finally, Misco contends that the district court abused its discretion in determining that Misco’s “requests for admissions” were actually interrogatories. On May 22, 1978, less than one month after filing its complaint and before either USS or Alside had filed an answer, Misco filed requests for 2,028 admissions, comprising 343 pages. Although Misco one month later voluntarily withdrew 580 of its “requests of admissions,” this still left 1,440 requests, comprising 225 pages. Alside and USS objected to the requests for admissions and the matter was referred to a magistrate. The magistrate held that only 18 of the 1,440 styled “requests for admissions” were actually valid requests for admissions under Rule 36, Fed.R.Civ.P. 36. The other 1,432 requests were determined by the magistrate to be interrogatories under Rule 33, Fed.R.Civ.P. 33, which a local district court rule limited to thirty. The district court adopted the magistrate’s recommendation and report.
Requests for admissions are not a general discovery device. 8 C. Wright & A. Miller, Federal Practice and Procedure § 2253, at 706 & n. 23 (1970)
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(citing cases). Further, a district court has broad discretion in regulating discovery.
Brown v. Arlen Management Corp.,
For the foregoing reasons, the judgment of the district court is affirmed in part, reversed in part, and remanded for further proceedings not inconsistent with this opinion.
Notes
. Alside conceded the existence of this exclusive dealership arrangement in its answer to request for admission 30.
. In its opinion, the district court indicated that Misco returned Alside's siding on June 24. Actually, Fielder on June 24 contacted his major Alside customer, Dickey, to attempt to persuade him to switch from Alside to a competitor’s siding and offered Alside’s Sales Representative Dan Smith employment at Misco. Due to our disposition of this issue, we need not decide whether these two actions would constitute a material breach of contract, hence discharging Alside’s duty to perform.
See W.F. Holt Co. v. A & E Electric Co.,
. Leshman had no knowledge concerning Misco until after January 1, 1974.
. A transcript of a tape recording made of the July 24, 1974 meeting was attached to "plaintiffs response in accordance with court's order on defendant’s motion for summary judgment." In his deposition, Sauer acknowledged that he remembered "in substance" making such a statement.
. Chattanooga Foundry was decided before the passage of the four year statute of limitations period of 15 U.S.C. § 15b (1982).
. Specifically, we do not decide whether the treble damage provision of Section 47-50-109 constitutes a "statutory penalty" under Section 28-3-104(c) or whether Section 28-3-104(a) is a special statute of limitations which would take precedence over Section 28-3-105(1),
see Watts v. Putnam County,
. Misco’s contention that the four year statute of limitatiops applicable to federal antitrust actions, 15 U.S.C. § 15b (1982), should be applied to its action under Section 47-50-109 is frivolous. Misco’s complaint explicitly alleges that its cause of action arises under Section 47-50-109. State law governs state law claims.
Erie R.R. v. Tompkins,
. We note that different policy considerations may be applicable if the party who failed to file a timely jury demand has been hailed into federal court against his will,
see Cascone
v.
Ortho Pharmaceutical Corp.,
