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2
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Is an expired patent in the public domain?

From what I've been reading about US patents, once a patent has expired, it enters the public domain and can be freely used. The patent I was looking at was filed on 1/1999 and published in 10/2000. ...
1
vote
2answers
122 views

Availibility to the public domain

From my limited understanding of the patent system, if I were to invent something but I didn't file for a patent, then someone else could still patent my idea. If I want to keep my invention open, is ...