This is аn appeal from a lawsuit seeking declaratory relief and damages in conjunction with an oil and gas contract. At issue is the applicability of the doctrines of res judicata and collateral estoppel. The trial court rendered summary judgment for defendants, Cliff C. Henderson, Robert B. Stallworth, Jr. and their respective companies, on the grounds that this suit is barred and litigation of the issues is precluded by the res judicata and collateral estoppel effects of a prior federal court judgment involving the same contract. In an unpublished opinion, Tex.R.Civ.P. 452, the court of appeals affirmed the judgment of the trial court. We affirm in part the judgment of the court of appeals, and we reverse and remand in part.
This cause is the result of a lawsuit filed by Omajeanne Lokey Mitchell against all the parties to this appeal and others to determine her royalty rights under certain oil and gas leases. After Mitchell took a nonsuit, this cause continued from a cross-action by Jack K. Jeanes and J.K.J. Corporation (Jeanes) against Cliff Henderson and *102 Cliff C. Henderson, Ltd., Inc. (Henderson) and Robert B. Stallworth, Jr. and Stall-worth Oil and Gas, Inc. (Stallworth). Presently, Jeanes seeks: (1) a declaratory judgment that the three options to a 1971 Investment Contract are binding on Henderson; (2) a declaratory judgment that these optiоns are covenants running with the land and thus, are binding on Stallworth; and (3) damages against Stallworth for tor-tious interference with the 1971 Investment Contract and a subsequent Jeanes-Hender-son oral development agreement, and for malicious interference with a prospective Jeanes-Henderson business relationship.
In 1971, Henderson and his company, Marilon Minerals, Inc. (Marilon), were producing gas in Parker and Hood Counties on the “Lokey-Cаrtwright" oil and gas leases pursuant to a farm-out agreement. When the purchaser of their gas offered to pay a higher price for the gas in exchange for the drilling of five additional wells on the leases, Henderson and Marilon agreed to drill these wells. Henderson and Marilon solicited Jeanes to help finance this project and in December 1971, these parties entered into an investment contract. Under this 1971 Investment Contraсt, Jeanes paid Henderson and Marilon $45,000 in exchange for a Vsths working interest in both the wells and the 320 acres surrounding each well. This 1971 Investment Contract also included three options which are the center of the declaratory judgment portion of this lawsuit. 1
Shortly thereafter, Henderson and Mari-lon drilled the wells, obtained production and assigned a %ths working interest to Jeanes. In fact, these wells continue to produce today and Jeanеs still receives the proceeds from his working interest. In July 1980, Henderson and Marilon conveyed and warranted 77½ percent of their working interest in the undeveloped portions of the Lokey-Cartwright leases to Stallworth. Jeanes responded in September 1981 by filing suit against Henderson and Marilon in the federal court for the Northern District of Texas contending that the sale to Stallworth interfered with his rights under the 1971 Investment Contract. Since no diversity of citizenship existed between the parties, Jeanes obtained federal question jurisdiction in the federal court by alleging that this sale violated section 10(b) of the Securities and Exchange Act of 1934, 15 U.S.C. § 78j(b) (1981) and Rule 10b-5, 17 C.F.R. § 10b-5 (1981). In addition to the federal claim, Jeanes asserted five state-related claims arising out of the July 1980 transaction: (1) a violation of the Texas Securities Laws under Tex.Rev.Civ. Stat.Ann. article 581-33 (Vernon 1985); (2) common law fraud and statutory fraud under Tex.Bus & Comm.Code Ann. § 27.01 (Vernon 1968 and Vernon Supp.1985); (3) slander of title; (4) breach of fiduciary duty; and (5) breach of contract and warranty.
The district court, exercising pendent jurisdiction
2
over the state-related claims, ad
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judicated the entire action brought by Je-anes. That court directed verdicts against Jeanes on the alleged securities laws violations as well as the first four of Jeanes’ state-related claims. Only the breach of contract and warranty claim survived the directed verdicts and that claim was decided against Jeanes based on jury findings. Accordingly, the federal district court rendered a take-nothing judgment against Je-anes and on appeal, the Fifth Circuit affirmed.
Jeanes v. Henderson,
THE DECLARATORY JUDGMENT ACTIONS
With respect to his requests for separate declaratory judgments against Henderson
3
and Stallworth, Jeanes argues that he is entitled to these judgments as a matter of law. Henderson and Stallworth both respond that res judicata bars and collateral estoppel precludes Jeanes from asserting these claims and litigating the accompanying issues. The effect of the prior federal court judgment on the present cause must be examined in terms of res judicata first, and then if necessary, collateral es-toppel. While courts are prone to confuse these two doctrines and use them interchangeably,
Bonniwell v. Beech Aircraft Corp.,
Henderson and Stallworth argue that since Jeanes could have pursued the declaratory judgment claims in the federal court, this lawsuit constitutes a “splitting” of his overall cause of action and should be barred. Jeanes counters that the current lawsuit involves a different cause of action than the federal court litigation, so res judicata does not apply.
See Griffin v. Holiday Inns of America,
Even though the original lawsuit involved both federal and state-related claims, the fact that it took place in federal court requires us to follow the federal law of res judicata.
Commercial Box & Lumber Co. v. Uniroyal, Inc.,
Jeanes’ argument that it would have been useless to seek declaratory relief during the original federal lawsuit concedes, and an examination of the record confirms, that he did not even attempt to assert these claims at that time. However, Jeanes could have amended his pleadings to include the declaratory relief he now seeks against Henderson and also he could have joined Stallworth and pleaded his current request for a declaratory judgment against him. The fact that Jeanes’ declaratory judgment actions are based on Texas law presents this cоurt with an unusual situation for considering res judicata. Here, we must ascertain the consequences of the subsequent assertion of omitted state-related claims from a federal court action. Section 25, comment (e) of the Restatement (Second) of Judgments (1982) instructs a state court to decide: (1) whether the federal court possessed jurisdiction over the omitted state claim, and if so, then (2) whether the federal court would clearly have declined the exercise of that jurisdiction as a matter of discretion. 4 If the federal court would have had jurisdiction over the second action and would have exercised its discretion to entertain that action, then the Restatement (Second) dictates that the second action be barred.
Whether the federal court would have had jurisdiction to hear the declaratory judgment actions is contingent upon the federal claim being of sufficient substance to confer pendent subject matter jurisdiction on that court.
See United Mine Workers v. Gibbs
With respect to Jeanes’ action for declaratory relief against Henderson, we are certain that the federal court would have exercised its discretion to take pendent jurisdiction over this claim. As noted, that court actually adjudicated all the pendent state-related claims brought by Jeanes against Henderson. Thus, there is no reason that the federal court would clearly have declined to exercise its discretion to take pendent jurisdiction over and decide this claim. Consequently, we hold that res judicata bars Jeanes from pursuing his declaratory judgment action against Henderson.
*105 In regards to his action against Stall-worth, Jeanes argues that he was under no procedural obligation to join Stallworth in the federal court litigation. Res judicata, however, can impose procedural obligations on litigants that do not otherwise exist under the rules of procedure. As mentioned, the federal court would have had jurisdiction over this matter by virtue of Jeanes’ federal securities laws action against Henderson. Deciding whether the federal court would clearly have declined to exercise its discretion to take jurisdiction over this claim, howevеr, raises different questions than Jeanes’ claim against Henderson.
If Jeanes had joined Stallworth in the federal court action and asserted his current request for declaratory relief at that time, Stallworth’s status would have been that of a pendent party. The doctrine of pendent party jurisdiction allows a federal court, in a non-diversity case, to adjudicate a state-related claim against a third party who is not otherwise involved in any federal claim.
See Florida East Coast Ry. Co. v. United States,
Traditionally, only parties and their privies were entitled to the benefits of res judicatа.
See, e.g., Cromwell v. County of Sac,
4 OTTO 351, 352,
In this cause, Henderson and Stall-worth possess a concurrent working interest in the undeveloped portions of the Lo-key-Cartwright leases, with Stallworth’s interest warranted by Henderson. Because of the warranty, Stallworth is entitled to take advantage of the res judicata benefits that inure to Henderson from the prior judgment.
See Gilman v. Osborn,
THE INTERFERENCE CLAIMS
In this part of the cause, Jeanes seeks damages from Stallworth for tortious inter-' ference with the 1971 Investment Contract and a subsequent Jeanes-Henderson oral development agreement, and for malicious interference with a prospective Jeanes-Hen-derson business relationship. According to Jeanes, shortly after the execution of the 1971 Investment Cоntract, he and Henderson entered into an oral agreement to further develop the Lokey-Cartwright leases. Also, Jeanes contends that the potential for an additional business relationship existed between Henderson and himself with respect to this future development. Jeanes complains that Stallworth’s on-going conduct concerning the Lokey-Cartwright leases interfered with these contracts and this prospective business relationship. The courts below, however, refused to consider these claims. The court of appeals reasoned that the res judicata effects of the federal court judgment barred Jeanes from asserting these claims.
As discussed previously, the scope of the federal court cause of action is determined by the “primary right” test.
See Kemp v. Birmingham News Co.,
Stallworth also argues that collatеral estoppel precludes Jeanes’ from asserting the remaining interference claims because the federal court necessarily decided that Stallworth was legally justified in his actions. We disagree. Collateral estoppel, or issue preclusion, prevents a party from relitigating a fact issue in a subsequent lawsuit, when the fact issue already was fully and finally litigated and was essential to the judgment in a prior litigation.
See Benson v. Wanda Petroleum Co.,
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Finally, Stallworth maintains that the summary judgment evidence proves as a matter of law that he is free from liability on the remaining interference claims. Here, Stallworth bears the burden of demonstrating that the summary judgment evidence conclusively disproves at least one element of each of the remaining claims.
See Rosas v. Buddie’s Food Store,
In summary, we hold that res judicata bars Jeanes’ actions for declaratory relief against Henderson and Stallworth and Je-anes’ action against Stallworth for tortious interference with the 1971 Investment Contract. With respect to Jeanеs’ actions against Stallworth for tortious interference with the Jeanes-Henderson oral development agreement and for malicious interference with a prospective Jeanes-Henderson business relationship, we hold that res judi-cata and collateral estoppel do not apply and that fact issues exist on these claims. Accordingly, except for Jeanes’ interference claims not affectеd by res judicata, we affirm the judgment of the court of appeals. Concerning the remaining interference claims, we reverse the judgment of the court of appeals and remand that part of the cause to the trial court for a trial on the merits.
Notes
. With respect to these options, the 1971 Investment Contract provided:
Party of the First Part [Henderson and Mari-lon] will give Party of the Second Part [Je-anes] the "Option" to partake in аny future Drilling and Exploration that said Party of the First Part might undertake in and around the Leases owned by Party of the First Part.... Party of the Second Part will also have the "Option” to purchase any existing Producing Leases, not presently owned by Party of the First Part, that said Party of the First Part might purchase.... Party of the First Part also agrees to give Party of the Second Part a 30 day Option to purchase all of his Interest should he ever decide to sell his Interest.
. The doctrine of pendent jurisdiction allows a • federal court to adjudicate state-related claims along with a federal claim when:
the relationship between [the federal] claim and the state claim permits the conclusion that the entire action before the court comprises but one constitutional "case.” The federal claim must have substance sufficient to confer subject matter jurisdiction on the court. [Citаtion omitted.] The state and federal claims must derive from a common nucleus of operative fact. But if, considered without regard to their federal and state character, a plaintiffs claims are such that he would ordinarily be expected to try them all in one judicial proceeding, then, assuming substantiality of the federal issues, there is power in federal courts to hear the whole. *103 United Mine Workers v. Gibbs,383 U.S. 715 , 725,86 S.Ct. 1130 , 1138,16 L.Ed.2d 218 (1966) (emphasis in original).
. Marilon sold its share of the working interest to Henderson and is not involved in the present action.
. Restatement (Second) of Judgments § 25, comment (e) (1982) provides:
A givеn claim may find support in theories or grounds arising from both state and federal law. When the plaintiff brings an action on the claim in a court, either state or federal, in which there is no jurisdictional obstacle to his advancing both theories or grounds, but he presents only one of them, and judgment is entered with respect to it, he may not maintain a second action in which he tenders the other theory or ground. If however, the court in the first action would clearly not have had jurisdiction to entertain the omitted theory or ground (or, having jurisdiction, would clearly have declined to exercise it as a matter of discretion), then a second action in a competent court presenting the omitted theory or ground should be held not precluded.
. In this part of the cause, Jeanes only seeks declaratory judgments. Thus, assuming the validity of Jeanes’ arguments, no liability on the part of Henderson or Stallworth will accrue until a breach of the options takes place. If we allow Jeanes to proceed against Stallworth and Jeanes prevails, due process would prevent Je-anes from asserting that judgment against Henderson.
See Blonder-Tongue Laboratories, Inc. v. University of Illinois Foundation,
. We note that this ruling does not bar Jeanes from suing Henderson and Stallworth if and when a breach of an option occurs, because a breach action would not be a part of the original cause of action. In the event of an action for breach, the court that adjudicates that lawsuit can determine the collateral estoppel effects of the federal court litigation.
