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The Supreme Court invalidates key Marconi radio-patent claims, citing prior art including Tesla

On 21 June 1943 the Supreme Court decided Marconi Wireless Telegraph Co. of America v. United States, 320 U.S. 1, holding central Marconi tuning claims invalid as anticipated. Tesla’s Patent 645,576 is discussed in the opinion alongside Lodge and John Stone Stone. In the causal graph this event weakens Judicial independence erosion (court capture), a driver that strengthens Rule of Law Gap from the Highest Governance Score — an improving welfare path.

Sources: [1][2]

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On 21 June 1943 the Supreme Court decided Marconi Wireless Telegraph Co. of America v. United States, 320 U.S. 1, holding central Marconi tuning claims invalid as anticipated. Tesla’s Patent 645,576 is discussed in the opinion alongside Lodge and John Stone Stone. Tesla had died in January. The decision is not a unique assignment of ‘the invention of radio’ to him.

Context

Popular retelling upgrades 320 U.S. 1 into a Tesla coronation. The docket is a government infringement suit against Marconi’s company. Justice delayed until after death did not pay Tesla. That incompleteness is the worsening stored here, not a claim that courts were Tesla’s enemies by conspiracy.

Nikola Tesla is not the sole author of every later object, law, or museum label that uses the name. Shared work with courts, excavators, printers, spouses, officials, and later states does not erase a documented role, and it does not make an ancient person the signer of a twentieth-century statute.

Why it matters

Patent-justice path. High confidence on the decision date and the shared prior-art holding.

A reporter’s volume is not a wizard crown. Name Lodge and Stone.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Nikola Tesla

    Person

    Direct responsibility

    responsibility level 0.25 · verified

    Complex: a Court of Claims/Supreme Court patent case about prior art. Tesla was dead. Direct unique victory is the wrong type.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

Evidence

The sources behind this fact and its verification state.

Verified2 sources on file
  1. 1.Marconi Wireless Telegraph Co. of America v. United States, 320 U.S. 1 (1943)Justia / U.S. Supreme Court · High credibility · verified
  2. 2.U.S. Reports: Marconi Wireless Telegraph Co. v. U.S., 320 U.S. 1 (1943)Library of Congress · High credibility · verified
What the sources establish

The Library of Congress U.S. Reports copy and Justia’s text independently publish the 1943 opinion.

Established: 21 June 1943 decision invalidating key Marconi claims with Tesla among cited prior art. Not established: that the Court named Tesla the unique inventor of radio, or that the ruling paid his estate a radio royalty series cited here.

Causal path

How this event connects to drivers and indicators in the graph.

  1. ActorNikola Tesla
  2. contributed toFactThe Supreme Court invalidates key Marconi radio-patent claims, citing prior art including Tesla
  3. weakensDriverJudicial independence erosion (court capture)
  4. strengthensIndicatorRule of Law Gap from the Highest Governance Score

Cite this page

Factrail. (2026). The Supreme Court invalidates key Marconi radio-patent claims, citing prior art including Tesla. Factrail. https://factrail.ai/facts/us-tesla-scotus-marconi-1943

https://factrail.ai/facts/us-tesla-scotus-marconi-1943

Accessed 16 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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