Appellant Cellar Door Productions, Inc. appeals the grant of summary judgment on res judicata grounds in favor of appellees Rick Kay, Robert Fox, Prophet Productions, Ltd., and Michael Tinik (Brass Ring), and Robert Cavalieri, Michael Illitch, and Olympia Arenas, Inc. (Olympia) in this antitrust action. Appellant also appeals the District Court's order granting sanctions pursuant to Fed.R.Civ.P. 11 in favor of Brass Ring and Olympia.

We find reversible error in the District Court's order granting summary judgment for appellees. We also reverse the District Court's orders granting sanctions against appellant with respect to the taking of out-of-state depositions while appellees' dispositive res judicata motion was pending, and affirm with respect to the motion for reassignment.

Cellar Door and Brass Ring are competitors in the concert promotion industry. Olympia, through its lease with the City of Detroit, operates the Joe Louis Arena and the Cobo Arena in downtown Detroit. Olympia and Brass Ring have entered into an arrangement for the promotion of musical events at the arenas. During the time period in question, they were the only arenas in Detroit and their rental was alleged to be a relevant market. Cellar Door alleges that because Olympia does not offer the arenas to it on the same rental terms as it offers them to Brass Ring, Brass Ring is able to offer performers more financially attractive terms than is Cellar Door. Therefore, Cellar Door alleges, the arrangement between Olympia and Brass Ring has effectively precluded Cellar Door from competing with Brass Ring in the Detroit market.

In 1983, Cellar Door instituted an antitrust action against Olympia and Brass Ring based on the same arrangement. That action was dismissed with prejudice by stipulation of the parties. In the present action, Cellar Door complains of antitrust violations that occurred subsequent to the dismissal of the 1983 action.

We first consider appellant's contention that the District Court erred in granting appellees' motion for summary judgment on res judicata grounds. The Supreme Court case of Lawlor v. National Screen Service Corp., 349 U.S. 322, 75 S. Ct. 865, 99 L. Ed. 1122 (1955), is controlling. In Lawlor, the plaintiffs brought an antitrust action in 1942 alleging that the defendants, National Screen and three producers, had conspired to establish a monopoly in the distribution of advertising posters to motion picture exhibitors through the use of exclusive licenses, and that the plaintiffs' business had been injured as a result. In 1943, prior to trial, that suit was settled and dismissed with prejudice. Id. at 324, 75 S.Ct. at 866. The settlement was based upon an agreement by National Screen to furnish plaintiffs with all standard accessories distributed by National Screen pursuant to its exclusive license agreements. In 1949, the plaintiffs brought another antitrust action, this time alleging that the prior settlement was merely a device used by the defendants to perpetuate their conspiracy and monopoly. Plaintiffs also alleged that five other producers had joined the conspiracy since the 1943 dismissal, that defendant National Screen had deliberately made slow and erratic deliveries of advertising materials in an effort to destroy plaintiffs' business, and that defendant had used tie-in sales and other means of exploiting its monopoly power. Id. at 325, 75 S.Ct. at 867. The Supreme Court held that the latter suit was not barred by res judicata because the two suits were not based on the same cause of action. Id. at 327, 75 S.Ct. at 868. The Court noted:

That both suits involved "essentially the same course of wrongful conduct" is not decisive. Such a course of conduct--for example, an abatable nuisance--may frequently give rise to more than a single cause of action.... While the 1943 judgment precludes recovery on claims arising prior to its entry, it cannot be given the effect of extinguishing claims which did not even then exist and which could not possibly have been sued upon in the previous case.

Id. at 327-28, 75 S.Ct. at 868 (footnote omitted).

Appellees argue that the differences between the 1942 complaint in Lawlor and the latter Lawlor complaint as well as differences in the circumstances surrounding the two complaints render the Lawlor decision inapplicable to the case at hand. Olympia and Brass Ring are correct that circumstances had changed during the period of time between the two suits in Lawlor. Because the defendant National Screen had entered into agreements with five additional motion picture producing companies, the complaint filed in the 1949 action included these companies as additional defendants. The latter complaint also alleged that there had been deliberate slowdowns on the delivery of materials under the license agreement entered into in settlement of the original action. The latter complaint further alleged that defendant National Screen had implemented an unlawful tie-in arrangement. Olympia and Brass Ring are incorrect, however, in their conclusion that these differences render Lawlor inapplicable to their case. The Court merely noted that "[i]n addition, there are new antitrust violations alleged here," and that "[i]n the interim, moreover, there was a substantial change in the scope of the defendants' alleged monopoly." Lawlor, 349 U.S. at 328, 75 S.Ct. at 868 (emphasis added). The language of Lawlor indicates that the decision is predicated on the finding that both suits were not based upon the same cause of action.

Other courts have similarly interpreted Lawlor, although in cases not involving a prior voluntary dismissal with prejudice. The Southern District of New York, for example, in United States v. General Electric Co., 358 F. Supp. 731, 740 (S.D.N.Y.1973), stated:

G.E. seeks to distinguish Lawlor upon the ground that in the second suit there were also additional allegations as to some new acts which it was claimed the defendants had committed since the earlier judgment. But, in my view, this was merely an additional reason why res judicata did not apply. It did not limit the Court's holding that a suit based upon a course of wrongful conduct occurring subsequent to the judgment in the prior suit is not based on the same but on a different cause of action.

The Seventh Circuit has also followed Lawlor insofar as it held that "[i]n the context of a continuing scheme to violate the antitrust laws, a cause of action accrues to the plaintiff each time the defendant engages in antitrust conduct that harms the plaintiff." See Ohio-Sealy Mattress Mfg. Co. v. Sealy, Inc., 669 F.2d 490, 494 (7th Cir.), cert. denied, 459 U.S. 943, 103 S. Ct. 257, 74 L. Ed. 2d 201 (1982).1

The facts of the case before us are similar to those of Cream Top Creamery v. Dean Milk Co., 383 F.2d 358 (6th Cir.1967). Cream Top involved an action alleging a continuing scheme to violate antitrust laws subsequent to a prior dismissal with prejudice. In that case, we relied upon Lawlor in reversing the District Court's order granting summary judgment on res judicata grounds. We noted, "[a]t least insofar as the complaint alleges violations since the dismissal of the [first] case, the judgment in that case cannot be given the effect of extinguishing a claim which arose subsequent to that judgment." Id. at 363 (citing Lawlor, 349 U.S. 322, 75 S. Ct. 865). Although Cream Top was based upon an alternative holding as well,2 we concluded that with respect to the price discrimination allegations, "[t]he wrongful conduct charged in this case is composed of a multitude of separate transactions alleged to have been discriminatory. Each such transaction or group of transactions, if proved to have the effects proscribed by the Robinson-Patman Act, might be held to be a separate legal wrong." Id. at 364.

In the case before us, Olympia and Brass Ring's course of conduct could give rise to more than one cause of action. Each time the arrangement precluded Cellar Door from competitively bidding for an event, a cause of action may have accrued to Cellar Door. Therefore, as in Lawlor and Cream Top, those causes of action that arose subsequent to the 1983 dismissal are not barred by res judicata. Accordingly, we must reverse the District Court's order granting summary judgment in favor of appellees.

Appellant also challenges the District Court's award of Rule 11 sanctions to appellees Olympia and Brass Ring. The court found that appellant had violated Rule 11 by (1) taking out-of-state depositions during the pendency of appellees' summary judgment motion and (2) violating local Rule 8c.1 as well as the corresponding directive on the Eastern District of Michigan civil cover sheet. Appellees failed to answer in the affirmative either of the following questions posed on the civil cover sheet:

(a) IS THIS A CASE THAT HAS BEEN PREVIOUSLY DISCONTINUED OR DISMISSED WITHOUT

PREJUDICE OR REMANDED TO A STATE COURT?

____YES ____NO

(b) IF YES GIVE THE FOLLOWING INFORMATION:

COURT: ______________________________ CASE NO: _______________________________

(a) OTHER THAN STATED ABOVE, ARE THERE ANY PENDING OR PREVIOUSLY DISCONTINUED

OR DISMISSED COMPANION CASES (cases in which it appears substantially similar

evidence will be offered at trial or the same or related parties are present

and the cases arise out of the same transaction or occurrence) IN THIS OR ANY

OTHER COURT, INCLUDING STATE COURT?

____YES ____NO

(b) IF YES GIVE THE FOLLOWING INFORMATION:

COURT: ______________________________ CASE NO: _______________________________