Altvater v. Freeman
Supreme Court of the United States
Argued April 19, 1943 Decided May 24, 1943
Full case name	Altvater v. Freeman
Citations	319 U.S. 359 (more) 63 S. Ct. 1115; 87 L. Ed. 1450; 1943 U.S. LEXIS 1252
Case history
Prior	135 F.2d 212 (8th Cir. 1943)
Holding
Although a licensee had maintained payments of royalties, a Declaratory Judgment Act claim of invalidity of the licensed patent still presented a justiciable case or controversy.
Court membership
Chief Justice Harlan F. Stone Associate Justices Owen Roberts · Hugo Black Stanley F. Reed · Felix Frankfurter William O. Douglas · Frank Murphy Robert H. Jackson · Wiley B. Rutledge
Case opinions
Majority	Douglas
Dissent	Frankfurter, joined by Roberts

Altvater v. Freeman, 319 U.S. 359 (1943), was a decision by the Supreme Court of the United States which held that, although a licensee had maintained payments of royalties, a Declaratory Judgment Act claim of invalidity of the licensed patent still presented a justiciable case or controversy.