OPINION
We consider whether a bankruptcy court reorganization plan releasing a debtor’s co-obligor placed the co-obligor’s interests before the bankruptcy court so that he was a party in interest to the bankruptcy for federal res judicata purposes. The trial court held that it did; the court of appeals held that it did not.
The rather convoluted facts of this case were well summarized in the published opinion of the court of appeals. We repeat only those facts necessary to our conclusion that summary judgment was proper on res judi-cata grounds. In 1988, Steven Corey and Incorsel International Entertainment Consultants, Inc. (“Incorsel”) co-signed a promissory note ultimately held by Texas Commerce. Corey, Incorsel’s sole stockholder, died in 1991, and Michael Geary became the executor of Corey’s estate. Incorsel filed for Chapter 11 bankruptcy protection in 1992, emerging under a confirmed reorganization plan the following year. As part of the bankruptcy reorganization, Texas Commerce received a partial payment on the note and promised to assert no future claims against Incorsel. In addition, the reorganization plan settled “any obligation of [Incorsel], alone, and any obligation of [Incorsel] and any other person, to any Entity.” Texas Commerce neither excepted to nor appealed from entry of the plan.
Texas Commerce sued Geary, in his capacity as executor of the sole stockholder’s estate, for the balance of the note. Geary moved for and received summary judgment on four grounds. One of the grounds was that the bankruptcy reorganization plan ended Corey’s obligation on the note and was res judicata on Texas Commerce’s claim for payment from the estate.
The court of appeals reversed on all four grounds and remanded for trial. With respect to res judicata, the court of appeals held that Geary was not a party to the Incorsel bankruptcy, and therefore, res judi-cata was not available as a defense because Geary did not satisfy the “identify of the parties” element. The court of appeals erred in concluding that Geary, in his capacity as executor of the sole stockholder’s estate, was not a party to the bankruptcy proceeding.
Because the Incorsel bankruptcy was a federal proceeding, federal law controls whether res judicata will bar a later state court proceeding.
See Russell v. SunAmerica Sec., Inc.,
We note at the outset that the Fifth Circuit has ruled that a bankruptcy order releasing the debt of the bankrupt party’s guarantor is entitled to res judicata effect.
See Republic Supply Co. v. Shoaf,
Based on
Shoaf,
we reject Texas Commerce’s argument that a bankruptcy reorganization plan cannot discharge the debts of someone other than the bankrupt party to someone other than the bankrupt party. Texas Commerce did not appeal from the bankruptcy plan, choosing instead to attack it collaterally in this later suit. Even assuming that the bankruptcy court committed an error of law, Texas Commerce’s sole remedy was by appeal and not by collateral attack.
See New York Life Ins. Co. v. Brown,
Texas Commerce argues further that, even if such a third-party release is possible,
this
release was not sufficiently clear and unambiguous. In
Shoaf,
the Fifth Circuit noted that the release at issue was clear and unambiguous, but did not state any particular requirement in this respect.
See Shoaf,
Having concluded that
Shoaf
protects from collateral attack a bankruptcy order releasing a guarantor from liability, we now turn to Texas Commerce’s primary argument: that Geary, in his capacity as executor of the co-obligor’s estate, was not a party to the bankruptcy. The Fifth Circuit first considered the interplay between bankruptcy proceedings and res judicata’s requirement of identical parties in
Southmark Properties v. Charles House Corp.,
The Fifth Circuit held that res judicata barred Craig’s claim because, although Craig was not a formal party to the Charles House bankruptcy, he was a party in interest because of his relationship to the corporation and his involvement in the bankruptcy. See id. at 869-70 (holding that the definition of “parties” is not limited to formal or paper parties, but also includes parties in interest, those “whose interests are properly placed before the court by someone with standing to represent them”) (quoting IB J. MooRE, MOORE’S FEDERAL PRACTICE ¶ 0.411[1] at 390-91 (2d ed.1983)). The Fifth Circuit also held that, even if Craig were not a party in interest, he was also a privy of Charles House. See id. at 870. Federal res judicata law also bars subsequent claims by privies of the bankrupt party. See id. In short, the Fifth Circuit vacillated between calling Craig a party in interest or a privy, but made perfectly clear that, regardless of the label, Craig’s relationship to Charles House’s bank *839 ruptcy was sufficient to satisfy the federal res judicata requirement of identical parties.
The Fifth Circuit later clarified
Southmark Properties
in holding that “adequate representation” of a non-party’s interests was a form of privity for res judicata purposes.
See Latham v. Wells Fargo Bank, N.A.,
In
Howell Hydrocarbons, Inc. v. Adams,
the Fifth Circuit again considered what type of participation in a bankruptcy proceeding makes one a “party” for res judicata purposes.
We are now faced with the situation hypothesized in
Latham:
whether federal res judicata applies to the bankrupt party’s co-obligor when the bankruptcy proceeding and reorganization plan directly addresses the co-obligor’s personal interests.
See Latham,
In concluding, we note a final matter. In reversing another ground for summary judgment not relevant to the res judicata issue, the court of appeals analyzed whether section 306 of the Texas Probate Code applies to independent estate administrations. 1 This is *840 sue is of limited future interest because recent legislation clearly states that, for deaths occurring on or after January 1, 1996, independent administrations are subject to section 306. See Act of May 27,1996, 74th Leg., R.S., ch. 1054, § 30, 1995 Tex. Gen. Laws 5207, 5216. In any event, we decline to consider this issue, and each of the other issues raised, because res judicata is an independent ground for disposition of this appeal.
Under Texas Rule of Appellate Procedure 59.1, we grant Geary’s application for writ of error and, without hearing oral argument, we reverse the judgment of the court of appeals and render judgment that Texas Commerce take nothing.
Notes
. The conflicting views expressed on this issue in the court of appeals’ majority and dissenting opinions,
