This case involves an interlocutory appeal of a class-certification order. The primary issue is whether the portions of the Federal Food, Drug, and Cosmetic Act (FDCA) regulating nonprescription drugs deprived the trial court of subject matter jurisdiction to hear claims regarding the efficacy of certain head-lice remedies. The court of appeals concluded that the FDCA preempted the class’s state-law claims and deprived the trial court of jurisdiction to enter its class-certification order. We disagree with the court of appeals’ conclusion that the trial court lacked subject matter jurisdiction. Ordinary preemption operates as an affirmative defense to a plaintiffs state-law claims but does not deprive state courts of jurisdiction over those claims. State-court jurisdiction is affected only when Congress requires that claims be addressed exclusively in a federal forum.
See San Diego Bldg. Trades Council v. Garmon,
In this case, we conclude that the FDCA provision at issue is not one of the few statutes that require claims to be resolved exclusively in a federal forum. The relevant section of the FDCA contains no forum-preempting language and indicates no intent to vest exclusive jurisdiction in a federal forum. We therefore conclude that the FDCA did not deprive the trial court of subject matter jurisdiction. Because this is an interlocutory appeal, only the question of subject matter jurisdiction is before us at this time; consequently, we do not decide whether the FDCA would, through ordinary preemption, provide a full defense to the plaintiffs’ claims. We reverse the court of appeals’ judgment and remand the case to that court for consideration of the other issues raised on appeal. See Tex.R.App. P. 59.1.
The petitioners in this case are plaintiffs suing six pharmaceutical companies for breach of the implied warranty of merchantability of certain over-the-counter head-lice remedies. The plaintiffs argue that, as lice strains have developed resistance to the active ingredient in the companies’ products, those products are no longer capable of effectively treating head-lice infestations and are therefore unfit for their ordinary purpose. See Tex. Bus. & Com.Code § 2.314(b)(3). The plaintiffs sought breach-of-warranty damages under *426 the Deceptive Trade Practices Act. See Tex. Bus. & Com.Code §§ 17.46(b), 17.50(a)(1). The defendants moved for summary judgment in the trial court, arguing that the FDCA preempted the plaintiffs’ claims. The plaintiffs filed a cross-motion, asking the trial court to rule as a matter of law that the claims were not preempted. The court granted the plaintiffs’ motion and struck the defendants’ affirmative defense of federal preemption. The trial court subsequently certified a class of Texas consumers and adopted a trial plan. The pharmaceutical companies then brought this interlocutory appeal challenging the class-certification order. See Tex. Civ. Prac. & Rem.Code § 51.014(3).
Before examining whether the trial court’s certification order complied with Texas Rule of Civil Procedure 42, the court of appeals first considered whether the trial court had jurisdiction to enter the certification order at all.
The court of appeals concluded that federal law preempted the plaintiffs’ claims and deprived the trial court of subject matter jurisdiction.
Under the Supremacy Clause of the United States Constitution, the laws of the United States are “the supreme Law of the Land; ... any Thing in the Constitution or Laws of any State to the Contrary notwithstanding.” U.S. Const. art. VI, cl. 2. If a state law conflicts with federal law, it is preempted and has no effect.
Maryland v. Louisiana,
Even if the defendants are correct that the FDCA preempts this state-law claim, however, it does not mean that the trial court lacked jurisdiction over the claim. Federal preemption “is ordinarily a federal defense to the plaintiffs suit” but does not ordinarily deprive a state court of jurisdiction.
Metro. Life Ins. Co. v. Taylor,
In support of their argument that preemption divests state courts of jurisdiction, the respondents cite several cases holding that federal law may “pre-empt conflicting state-court jurisdiction.”
Int’l Longshoremen’s Assoc. v. Davis,
The lack of explicit forum-preempting language is not controlling when there is other evidence that Congress intended to establish an exclusive federal forum; “the presumption of concurrent jurisdiction can be rebutted by an explicit statutory directive, by unmistakable implication from legislative history, or by a clear incompatibility between state-court jurisdiction and federal interests.”
Tafflin v. Levitt,
In this case, we conclude that the FDCA contains no such “complex and interrelated federal scheme of law, remedy, and administration” that would divest the state courts of jurisdiction.
Id.
The statute neither includes a private civil enforcement provision nor specifies a forum where claims may be heard. 21 U.S.C. § 379r. Nor is there indication in the legislative history of the FDCA that Congress intended it to divest state courts of jurisdiction to hear claims relating to nonprescription drugs, or that state-court jurisdiction would be incompatible with federal interests. The Act itself provides that “[njothing in this section shall be construed to modify or otherwise affect any action or the liability of any person under the product liability law of any State.” 21 U.S.C. § 379r(e). The Senate Committee Report for the bill enacting that provision similarly noted that “the legislation explicitly provides that it shall not be construed to modify or otherwise affect the traditional product liability law of any State. Tort liability rules and requirements would remain unchanged and unaffected.” S.Rep. No. 105-43, at 66 (1997). Congress’s decision to exclude such a broad category of claims from the reach of the statute is inconsistent with an intent to vest “exclusive jurisdiction ... in another body.”
Davis,
We therefore conclude that the FDCA does not deprive state courts of subject matter jurisdiction to hear claims relating to such products. We do not decide whether the FDCA would, through ordinary preemption, provide a full defense to the plaintiffs’ claims; in this interlocutory appeal, only the question of subject matter jurisdiction is currently before us.
Pursuant to Rule 59.1 of the Texas Rules of Appellate Procedure, we grant the class’s Petition for Review, and, without oral argument, we reverse the court of appeals’ judgment and remand the case to that court for consideration of the other *429 issues raised on appeal. See Tex.R.App. P. 59.1.
