Wiktionary
unpatented
a. Not patented.
WordNet
unpatented
adj. (of devices and processes) not protected by patent; "unpatented inventions"
Usage examples of "unpatented".
The poor unpatented visions are at this hour all in a bundle up stairs in my trunk.
At one time this had been a model Zoo, and then, when real, unpatented animals had become very rare, a place with top international security.
The kernels nestled tightly together, hundreds of them, each one unpatented, each one a genetic infection.
In his laboratory, Judson reminded Cranston, were the unpatented formulas for synthetic glass, synthetic rubber, and many other discoveries that would mean millions to a warlike nation.
We would rather throw the device on the open market, unpatented, than submit to this extortion.