This is аn appeal from the district court for the Northern District of Illinois, staying proceedings in the Circuit Court of Cook
Harper Plastics, Inc. (“Harper”) purchases and resells raw thermoplastic materials and other plastic goods. Amoco Chemicals, Inc. manufactures polypropylene and other polymer resins, and markets them in interstate commerce. A subsidiary of Amoco Chemicals, Amoco Fabrics, Inc., operates three plants in which it manufactures and sells synthetic yarns and fabrics made from polypropylene. Patchogue-Plymouth, Inc. is a division of Amoco Fabrics. In June 1976, Harper commenced this action against Amoco Chemicals and its subsidiaries in federal district court. The first two counts of Harper’s amended complaint alleged violations of § 2 of the Clayton Act as amended by the Robinson-Patman Act, 15 U.S.C. § 13(a). Specifically, Harрer alleged that the defendants had discriminated against it by selling waste polypropylene to other customers at lower prices and by offering certain services and advantages to other customers which were unavailable to Harper. Amended Count III of the complaint alleged that the defendants had violated 15 U.S.C. § 13(e) by requiring that Harper disclose the names of its resale customers as a precondition to the sale of a quantity of polypropylene carpet backing known as F.L.W. Count IV alleged that Amoco Fabrics and Patchogue-Plymouth had breached a contract for the sale of mixed-face yarn. The first three counts alleged federal claim jurisdiction pursuant to 28 U.S.C. § 1331. Count IV alleged diversity jurisdiction pursuant to 28 U.S.C. § 1332 or pendent jurisdiction in the alternative.
After extensive discovery by both parties, defendants moved for summary judgment on all four counts. The district judge took cognizance of mattеrs outside the pleadings and thereupon dismissed the first two counts pursuant to Fed.R.Civ.P.12(b)(l)
While that appeal was pending, however, Harper filed a three-count complaint in the Circuit Court of Cook County, Illinois. The conduct alleged in the first count of that complaint was the same as that alleged in Counts I and II of the federal complaint. The second count alleged the same facts as Amended Count III, and the third count repeated the facts alleged in Count IV of the federal complaint. The state trial judge dismissed the first count for failing to state a claim upon which relief could be granted and the third count because that part of Harper’s lawsuit was still pending in federal court; he refused to dismiss the sеcond count. The defendants thereafter returned to federal district court seeking an injunction staying the state proceedings.
I.
At the outset, we consider appellant’s contention that the first three counts of its amended federal complаint were dismissed for want of subject matter jurisdiction. If that argument is correct, then res judicata cannot bar the state proceedings because a dismissal for want of jurisdiction does not preclude a court of competent jurisdiction from reaching the merits of the claim in a subsequent suit. See IB Moore’s Federal Practice 10.405[5] at 659-62 (2d ed. 1980). That dismissal would merely preclude relitigation of the issue of whether the first tribunal had jurisdiction. Jackson v. Irving Trust Co.,
For the purposes of res judicata, the definition of a judgment on the merits is one which “is based on legal rights as distinguished from mere matters of practice, procedure, jurisdiction, or form.” Fairmont Aluminum Co. v. Comm’r,
Even if we were confined to the older, more limited view, we should still find that the dismissal of appellant’s Amended Count III was on the merits. In its opinion affirming the district judge’s dismissal of that part of Harper’s complaint, this court explained:
[T]he conduct of which Harper complains, imposing a condition that resale be overseas and demanding assurances in the form of a customer list, was not discrimination with respect to delivery services; rather, it was a refusal to go forward unconditionally with a sale. . . . Section 2(e) requires that service of delivery itself be made available to purchasers on proportionally equal terms. It does not require that all conditions precedent to a delivery be identical in every transaction in like goods sold for resale. As the gravamen of Harper’s complaint is discrimination with respect to a term of sale not itself a “service” within the meaning of § 2(e), Harper may not attempt to bring its case within the meaning of that*944 subsection by employing the label “delivery.”
Having decided that much, we may not dispense with appellant’s argument that because the district court found, and we agreed, that there was no subject matter jurisdiction over Counts I and II,
Next, we consider appellant’s argument that the cause of action alleged in Amended Count III of the federal pleading is distinct from that alleged in the state complaint. Appellant admits that Amended Count III is based on the same “physical acts” as Count II of the state complaint, but nonetheless urges that because recovery is sought under different laws, the rights and duties involved, and therefore the causes of action, are separate and distinct. We find no merit in this argument.
When a valid, final judgment on the merits is rendered in a judicial proceeding, res judicata operates to bar relitigation of the same cause of action between the same parties. United States v. International Building Co.,
As a corollary to the general rule, res judicata operates to bar litigation of matters that should have been raised in the prior proceeding. The prior judgment is conclusive “not only in respect of every matter which was actually offered and received to sustain the demand or. to make out a defense, but also as to every ground of recovery or defense which might have been presented.” Mendez v. Bowie,
Turning now to the record, we find that this is precisely what appellant attempts to do. The facts set forth in Amended Cоunt III of the federal complaint are the same as those alleged in the second count of the state pleading. The only significant variations lie in the jurisdictional allegations and the form of relief sought in each (j. e., damages under the Robinson-Patman Act in the federal complaint, and damages for breach of contract in the state complaint). In light of the foregoing authorities, appellant’s contention that two separate causes of action are involved is simply incorrect. In essence, appellant argues that whenever several theories of relief can conceivably apply to a single instance of wrongdoing, it follows of necessity that several causes of action arise out of that wrongdoing. While a single wrongful act may in some instances give rise to more than one cause of action, Kernel Kutter v. Fawcett Publications, Inc.,
Nonetheless, appellant insists that a certain unfairness inheres in requiring the plaintiff to join state theories of relief in a federal complaint where those state claims could only be entertained under the doctrine of pendent jurisdiction. Because that jurisdiction is discretionary, a plaintiff cannot know with certainty that the federal court will elect to hear the pendent claims and, apрellant contends, it is unfair to expect the plaintiff to plead them at all. Appellant also argues that if the district judge dismisses the pendent claims, the result may be that the litigant will never be able to argue the merits of those claims. Finally, appellant points to burgeoning court dockets and argues that it is unfair to “force” pendent claims on the federal courts. We respond to these arguments seriatim.
Under the doctrine of pendent jurisdiction, a federаl court is empowered to entertain state claims when “[t]he state and federal claims ... derive from a common nucleus of operative fact.” United Mine Workers v. Gibbs,
We fail to discern the unfairness in requiring a plaintiff to join all relevant theories of relief in a single proceeding. The uncertainty over whether a trial judge would exercise pendent jurisdiction does not justify permitting the institution of a multiplicity of proceedings which may have the effect of harassing defendants and wasting judicial resources. If appellant entertained any doubts at the pleading stage, they should have been resolved in favor of joinder. See Federated Department Stores v. Moitie, - U.S. -,
A dismissal of the claims for relief under federal law in a complaint to which pendent state claims have been joined does not of itself end the litigation. “[I]f it appears that the state issues predominate, whether in terms of proof, of the scope of issues raised, or the comprehensiveness of the remedy sought, the state claims may be dismissed without prejudice and left for rеsolution to state tribunals.” United Mine Workers v. Gibbs,
Finally, we must reject appellant’s contention that it is unfair to force pendent claims on federal trial courts. If this were so, then one may as well argue that the entire doctrine of pendent jurisdiction is unfair, since the effect of its application is to busy the federal court with matters of state law. The primary purpose of the doctrine is to promote fairness to litigants and judicial economy by disposing of a controversy in a single proceeding. United Mine Workers v. Gibbs,
II.
We turn now to appellant’s contention that the district judge erred in enjoining the state proceedings pursuant to the relitigation exception to the Federal Anti-Injunction statute, 28 U.S.C. § 2283 (1976). Appellant urges that because the issue of whether appellees’ conduct constituted а breach of contract was never adjudicated in the federal court, that exception has no application here. The argument is without merit.
Under 28 U.S.C. § 2283, a federal court may enjoin a state proceeding only “as expressly authorized by Congress, or where necessary in aid of its jurisdiction, or to protect or effectuate its judgments.” The prohibition is absolute unless the injunction falls squarely within one of the three exceptions, Vendo Co. v. Lektro-Vend Corp.,
The exception “to protect or effectuate its judgments” applies to this case. This language was added in 1948 to permit federal courts to enjoin litigation of matters finally adjudicated in federal court. Samuel C. Ennis & Co. v. Woodmar Realty Co.,
Appellant nonetheless insists that Atlantic Coast Line R. Co. v. Brotherhood of Locomotive Engineers forbids the sort of injunction entered below. In that case, the Supreme Court found that none of the exceptions in the statute justified the stay of the state proceedings, and accordingly permitted a state injunction against the defendant to stand. We do not read that case as abrogating the rule against claim-splitting. The Court held only that federal courts do not have the inherent power to enjoin state proceedings but must look to the express exceрtions to § 2283. As the court in Woods Exploration and Producing Co. v. Aluminum Company of America noted, “[T]he relitigation principle retains its vitality and means simply that a federal court may enjoin a state proceeding under the doctrine of res judicata.”
The other case upon which appellant relies, United States v. Ford Motor Co.,
We recognize that the result of our holding is that appellant will not be able to
The judgment of the district court is Affirmed.
Notes
. The district judge’s memorandum opinion states that the dismissal was pursuant to rule 12(b)(3). This was obviously a typographical error as the propriety of venue was never at issue.
. 28 U.S.C. § 2283 provides: “A court of the United States may not grant an injunction to stay state proceedings in a State court except as expressly authorized by Act of Congress, or where necessary in aid of its jurisdiction, or to protect or effectuate its judgments.”
. In a footnote to our unpublished order of March 17, 1980, we said that “[b]ecause of the trial court’s reliance on matters outside the pleadings, we treat the court’s judgment as entered pursuant to Rule 56. Summary Judgment was, in the context of this case, procedurally appropriate.” Upon reconsideration, we find that this was inappropriate nomenclature. Issues of subject matter jurisdiction are not properly disposed of by Rule 56 judgment. Rosemound Sand and Gravel Co. v. Lambert Sand and Gravel Cо.,
