after a patent expires, is it legal for anyone to make, use, and sell it?

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after a patent expires, is it legal for anyone to make, use, and sell it?

2007-10-20 05:15:24 · 3 answers · asked by Anonymous in Politics & Government ➔ Law & Ethics

3 answers

In general, yes. That is why we have so many photocopy devices from so many manufacturers. As soon as Xerox patents expired, dozens of companies were ready to market thier own devices using that very same technology.

2007-10-20 05:23:05 · answer #1 · answered by afreshpath_admin 6 · 0⤊ 0⤋

As long as it is not renewed -- yes -- that's the nature of patents.

2007-10-20 12:27:30 · answer #2 · answered by coragryph 7 · 0⤊ 0⤋

Yes. And it cannot be extended.

2007-10-23 06:15:31 · answer #3 · answered by HK-boy 4 · 0⤊ 0⤋