1. unpatented

adjective. (of devices and processes) not protected by patent.


  • patented


  • patented (English)
  • un- (English)
  • on- (Middle English (1100-1500))

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Example sentences of the word unpatented

1. Adjective
If all you have is an unpatented claim, the feds will not be happy if you make a permanent home on the surface.

2. Verb, past participle
Manufacturers modified the Pennsylvania Fireplace’s design, which Franklin chose to leave unpatented, by adding a flat surface for cooking on top of the fire box.