2 votes

Is an expired patent in the public domain?

It is important to remember that a patent does not give anybody the right to do what the patent covers. For example, if I had a patent on a more effective delivery system for MDMA or LSD, having a ...
Gary S's user avatar
  • 653
1 vote

Can I patent a product that another person had a patent on but failed to pay the maintenance fees?

No Patents are applied for the benefit of the true inventor or the inventor's assignee. If you didn't invent it you can't patent it. The expiration of the original patent has zero bearing on the ...
George White's user avatar
  • 28.8k
1 vote

Failure to pay maintenance fees

No, the idea is not patentable anymore. Once any person anywhere publishes knowledge on how to create the invention (whether publishes it in a patent, online, in a novel, etc...), the idea can no ...
RichS's user avatar
  • 167

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