
307 U.S. 241 (1939)
ELECTRICAL FITTINGS CORP. ET AL.
v.
THOMAS & BETTS CO. ET AL.
No. 582.
Supreme Court of United States.
Argued April 19, 1939.
Decided May 22, 1939.
CERTIORARI TO THE CIRCUIT COURT OF APPEALS FOR THE SECOND CIRCUIT.
Mr. Samuel E. Darby, Jr., with whom Mr. Lloyd H. Crews was on the brief, for petitioners.
Mr. George Whitefield Betts, Jr., with whom Messrs. William Bohleber and Francis H. Fassett were on the brief, for respondents.
MR. JUSTICE ROBERTS delivered the opinion of the Court.
This was a suit in equity by the respondents for alleged infringement of a patent. The District Court held claim *242 1 valid but not infringed and claim 2 invalid.[1] Instead of dismissing the bill without more, it entered a decree adjudging claim 1 valid but dismissing the bill for failure to prove infringement.
The respondents did not appeal, but filed in the Patent Office a disclaimer of claim 2. The petitioners appealed to the Circuit Court of Appeals from so much of the decree as adjudicated claim 1 valid. The appeal was dismissed on the ground that the petitioners had been awarded all the relief to which they were entitled, the litigation having finally terminated in their favor.[2] The court was of opinion that the decree would not bind the petitioners in subsequent suits on the issue of the validity of claim 1.
We granted certiorari because of an alleged conflict of decision.[3] A party may not appeal from a judgment or decree in his favor, for the purpose of obtaining a review of findings he deems erroneous which are not necessary to support the decree.[4] But here the decree itself purports to adjudge the validity of claim 1, and though the adjudication was immaterial to the disposition of the cause, it stands as an adjudication of one of the issues litigated. We think the petitioners were entitled to have this portion of the decree eliminated, and that the Circuit Court of Appeals had jurisdiction,[5] as we have held this court has,[6] to entertain the appeal, not for the purpose of passing on the merits, but to direct the reformation of the decree.
*243 The judgment is reversed, and the cause is remanded to the Circuit Court of Appeals with instructions to entertain the appeal and direct the District Court to reform its decree in accordance with the views herein expressed.
Reversed.
NOTES
[1]  23 F. Supp. 920.
[2]  100 F.2d 403.
[3]  See Oliver-Sherwood Co. v. Patterson-Ballagh Corp., 95 F.2d 70, 71.
[4]  Lindheimer v. Illinois Bell Tel. Co., 292 U.S. 151, 176.
[5]  See 28 U.S.C. § 225.
[6]  Gully v. Interstate Natural Gas Co., 292 U.S. 16; Oklahoma Gas & Electric Co. v. Oklahoma Packing Co., 292 U.S. 386; William Jameson & Co. v. Morgenthau, ante, p. 171.
