OPINION
The issue in this case is whether a New York order dismissing with prejudice a mother’s petition for paternity precludes a subsequent paternity suit in Texas brought by the mother as next friend of the child. We hold that the doctrine of res judicata bars the second suit. Accordingly, we reverse the judgment of the court of appeals and affirm the judgment of the trial court.
Carmen Bellinger gave birth to a child out of wedlock, and she subsequently filed a paternity suit in family court in New York, in her individual capacity only, alleging that Gerard Purcell was the biological father of her minor child, A.G.B. A.G.B. was not a party to the New York suit, and he was not represented by a guardian ad litem. Following a bench trial, the New York court dismissed Bellinger’s suit with prejudice, finding that Bellinger did not meet her burden of providing “clear, convincing and entirely satisfactory” proof of paternity.
Thirteen years later, Bellinger filed a paternity suit against Purcell in Harris County, Texas, suing in her individual capacity and as next friend of A.G.B. Purcell moved for summary judgment on the ground that the New York judgment barred the present suit under the doctrines of res judicata and collateral *601 estoppel. The Texas trial court granted summary judgment.
Bellinger appealed the Texas judgment only as next friend of A.G.B. The court of appeals reversed the summary judgment as to A.G.B. and remanded the case for trial, holding that the prior judgment against Bel-linger individually did not preclude a subsequent paternity suit in the name of her son.
Before determining whether the New York judgment is res judicata or has preclusive effect, we must first decide which state’s law to apply in answering that inquiry. Purcell contends that if the New York judgment would bar a subsequent suit in A.G.B.’s name in New York, it bars such a suit in Texas as well. The court of appeals rejected this argument, instead applying Texas law to determine the res judicata effect of the New York judgment. Id. at 682.
The court of appeals erred in applying Texas law.
See Eagle Properties, Ltd. v. Scharbauer,
Under New York law, as in most jurisdictions, res judicata gives binding effect to a valid judgment and prevents the parties to an action, or those in privity with them, from subsequently relitigating questions that were necessarily decided in the prior action.
See Watts v. Smss Bank Corp.,
At the time Carmen Bellinger brought the New York paternity suit, the New York statutes did not give a child the right to bring a paternity proceeding.
See
N.Y. Fam. Ct. Law § 522 (McKinney 1983). The New York courts have interpreted that statute to “clearly envisage[ ] that the mother would be representing her child’s interest as well as her own,” absent evidence that suggests that the mother did not prosecute the action vigorously or other evidence to suggest that the child’s interests were not adequately protected.
Slocum on Behalf of Nathan A v. Joseph “B”,
In arguing that A.G.B.’s interests were not fully represented in the prior New York paternity action, Bellinger relies solely on her own affidavit attached to her sum *602 mary judgment response. She states that A.G.B. is “very curious as to his family background and origins.” She then asserts that she is bringing this action so that A.G.B. can have his own questions answered and that those questions are “not necessarily identical” to Bellinger’s interests in the previous paternity suit. This eonclusory statement is not sufficient to create a fact question regarding whether A.G.B.’s interests were fairly represented in the New York suit.
The Texas court of appeals questioned whether Bellinger received a full hearing because the New York trial court excluded some evidence that Bellinger attempted to introduce.
Bellinger failed to offer any summary judgment evidence that A.G.B.’s interests were not adequately litigated in the New York proceeding. Thus, under New York law, Bellinger and A.G.B. were in privity in that proceeding, and the doctrine of res judi-cata bars the subsequent Texas suit.
We note that under Texas law, the Family Code provides a rebuttable presumption that “in a trial on the merits before a judge or jury ... the interests of the child will be adequately represented by the party bringing suit to establish parentage of the child.” Tex. Fam.Code § 160.003 (previously codified at Tex. Fam.Code § 13.07). Unless the child rebuts this presumption, a judgment in a prior paternity action by the mother bars any subsequent suit. Accordingly, the result in this case would be the same under Texas law.
By a cross point of error, Bellinger alleges that section 160.003 of the Texas Family Code denies A.G.B. due process and equal protection under both the Texas and United States Constitutions. Bellinger’s constitutional challenge is leveled at the Texas statute, which does not govern this case. Even were we to construe Bellinger’s argument as attacking New York law, however, no violation of constitutional rights has occurred. A state has the right to impose reasonable parameters on suits to establish paternity.
Cf. Reed v. Campbell,
Our holding does not prevent a child from establishing paternity; it only prevents relit-igation of paternity when the child’s interests were adequately pursued in a previous paternity action that resulted in a final judgment. The state has a legitimate interest in preserving the finality of final judgments. Therefore, our holding does not violate either the due process or the equal protection rights of A.G.B.
Accordingly, without hearing oral argument, we grant Purcell’s application for writ of error, reverse the judgment of the court of appeals, and render judgment in favor of Purcell. Tex.R.App. P. 170.
