Majority — Reed J.
delivered the opinion of the Court.
This certiorari brings before us for review the determination of the Circuit Court of Appeals that cases at law sounding in tort, brought in the federal courts on thé ground of diversity of citizenship, are'ruled by the state law as declared by the state’s highest court when the judgment of the trial court is entered and not by the state law as so declared at thé time of entry of the appellate court’s order of affirmance or reversal. We: granted the certiorari because of the uncertainty of the: law upon this question as contained in this Court’s former decisions.
It is conceded that at the time the motion to dismiss was sustained neither the Ohio Workmen’s Compensation Act[2] nor the common law, as interpreted by the supreme court of that state, gave a right of recovery to petitioner. The constitution of Ohio[3] authorized the passing of laws establishing a state fund out of which compensation for death injuries or occupational diseases, was to be paid employees in lieu of all other rights to compensation or damages from any employer who complied with the law: At the time of the dismissal of the petition by the trial court no provision had been made by statute for any of the occupational diseases included in petitioner’s complaint. Respondent had fully complied with the Workmen’s Compensation Act. The Ohio constitution and compensation statutes passed pursuant to its authority had been consistently construed by the Ohio courts.as
1 Vandenbark v. Owens-Illinois, Glass Co., 110 F. 2d 310 , 312.
2 Ohio Gen. Code. (Page, 1337) § 1465-70.
3 Art. 2, § 35.
While Erie R. Co. v. Tompkins[6] made the latfr of the s^ate, as declared by its highest nourt,. effective to govern tort cases cognizable in federal courts on the sole ground Of diversity, there was no necessity there for discussing at what step in the cause the state law would be finally détermined. In that case no change occurred in the state decisions between the accident and our judgment. There is nothing in the Rules of Decision section to point the way to a solution.[7]
During the period when. Swift v. Tyson[8] (1842-1938) ruled the decisions of the federal courts, .its theory of their freedom in matters of general law from the authority of átate-'.courts pervaded opinions of this Court involving even state statutes or local law. As a consequence some decisions hold that a. different interpretation of state law by state, courts after a decision in a fed
4 Zajachuck v. Willard Storage Battery Co., 106 Ohio St. 538 ; 140 N. E. 405 ; Mabley & Carew Co. v. Lee, 129 Ohio St. 69 , 73; 193 N. E. 745 .
5 Triff v. National Bronze & Aluminum Foundry Co., 135 Ohio St. 191 , 205; 20 N. E. 2d 232 .
6 304 U. S. 64 .
7 U. S. Code, Title 28, § 725. - “Laws of States as rules of decision. The laws* of the several States, except where the Constitution, treaties, or statutes of the United States otherwise require or provide, shall be. regarded as rules of decision in trials at common law, in the courts of the United States, in cases where they apply.”
8 16 Pet. 1 .
In Burgess v. Seligman, cited in the preceding note, a státute of Missouri relating to the liability of stockholders of a Missouri corporation was interpreted by the state supreme court contrary to the prior decision of the federal trial court. This Court affirmed the. trial court, saying
“So when contracts and transactions have been entered into, and rights have accrued thereon under a particular state of the decisions, or when there has been no decision, of the State tribunals, the Federal courts properly claim the right to adopt their own interpretation of the law applicable to the case, although a different interpretation may be adopted by the State courts after such rights have accrued.”[10]
What we conceive, however, to be the true rule to guide a federal ¿ppellate court where there has been a change of decision iri state courts subsequent to the judgment of the district court was stated, before any of the opinions just cited, in United States v. Schooner Peggy.[11] The Court there said
“It is, in the general, true, that , the province of an appellate - court is" only tó enquire whether a judgment when rendered was erroneous or not. But if, subsequent to the judgment, and before the decision of the appellate court, a law intervenes and positively changes the rule which governs, the law must be obeyed, or its obligation denied.”
9 Pease v. Peck, 18 How. 595 , 599; Morgan v. Curtenius, 20 How. 1 ; Burgess v. Seligman, 107 U. S. 20 , 33; Concordia Insurance Co. v. School District, 282 U. S. 545 , 553.
10 Cf. Kuhn v. Fairmont Coal Co., 215 U. S. 349 , 356.
While cases were pending here on review, this Court has acted to give opportunity for the application by the lower courts of statutes enacted after their .judgments or decrees.[16] It has vacated judgments of state courts because of contrary intervening decisions,[17] and has accepted' jurisdiction by virtue of statutes enacted after cases were pending before it.[18] Where, after judgment below, a declaration of war changed the standing of one litigant from an alien belligerent to an enemy, this Court took cognizance of the change and modified the action below because of the new status.[19] Similarly repeal of criminal laws or of a constitutional provision without a saving clause deprives appellate courts of jurisdiction to
12 93 U. S. 674 ; see discussion of this case in Bauserman v. Blunt, 147 U. S. 647 , 655-56.
16 Dinsmore v. Southern Express Co., 183 U. S. 115 ; Missouri ex rel. Wabash Ry. Co. v. Public Service Comm’n, 273 U. S. 126 , 130; Carpenter v. Wabash Ry. Co., 309 U. S. 23 , 26.
17 Gulf, C. & S. F. Ry. Co. v. Dennis, 224 U. S. 503 ; Dorchy v. Kansas, 264 U. S. 286 , 291; Patterson v. Alabama, 294 U. S. 600 , 607.
18 Stephens v. Cherokee Nation, 174 U. S. 445 , 478; Freeborn v. Smith, 2 Wall. 160 , 174.
19 Watts, Watts & Co. v. Unione Austriaca, 248 U. S. 9 , 21.
Respondent' earnestly presses upon ms the desirability of applying the rule that appellate courts will review a judgment only to determine whether it was correct when made; that any.other review would make the federal courts subordinate to state courts apd their judgments subject to changes of attitude or membership- of state courts, whether that change was normal' or induced for the purpose of affecting former federal rulings.- While not insensible to possible complications, we are of the view that, until such time as a case is no longer sub judice, the duty rests upon federal courts to apply state law under the Rules of Decision statute in accordance with the then controlling decision of the highest state court.[21] Any other conclusion, would but perpetuate the confusion and injustices arising from inconsistent federal and state interpretations of state law.
Reversed.
Mb. Justice McReynolds concurs in the result.
Mb..Justice Stone took no part in the consideration or decision of this case.
20 United States v. Chambers, 291 U. S. 217 , 222.
21 We have' applied the rule enunciated in the case of Erie R. Co. v. Tompkins, 304 U. S. 64 , that state law as determined by the state’s highest court is to be followed as a rule of decision in the federal courts, to determinations by state intermediate appellate courts. West v. American Telephone & Telegraph Co., ante, p. 223; Fidelity Union Trust Co. v. Field, ante, p. 169; Six Companies of California v. Joint Highway District, ante, p. 180; Stoner v. New York Life Insurance Co., ante, p. 464.