What happens to a patent when it expires?

it becomes the property of the state
ownership rights are inherited
the patent is licensed
It becomes public domain
A patent allows you, and only you, to profit from your genius when you invent something new. No one else can manufacture or sell your invention unless you give permission. When a patent expires, anyone can copy your idea and market it. It becomes public domain
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Answers by country

it becomes the property of the state
ownership rights are inherited
the patent is licensed
It becomes public domain
answers
flagAustralia
0%
6%
0%
93%
15
flagPoland
15%
11%
7%
64%
1457
flagthe United Kingdom
16%
9%
12%
61%
31
flagthe United States
12%
21%
6%
60%
33
flagGermany
30%
10%
7%
52%
40
flagAustria
50%
0%
10%
40%
10
flagIndia
43%
4%
17%
34%
23