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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.

See also

Further reading

  • Maines, Ruanne Neighbour (1949). "Declaratory Judgments: Patent Litigation: Justiciable Controversy". California Law Review. 37 (3). California Law Review, Vol. 37, No. 3: 506–510. doi:10.2307/3477809. JSTOR 3477809.

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