[License-discuss] Becoming Public Domain After X Years

[Richard Fontana]

On Sat, Nov 23, 2019 at 10:55 AM Martin L via License-discuss
<license-discuss at lists.opensource.org> wrote:
>
> Hi all,
>
> I was wondering if anyone had links/knowledge about licenses which,
> after X amount of time (say, 10 years), release the code into the public
> domain?

copyleft-next (https://github.com/copyleft-next/copyleft-next/blob/master/Releases/copyleft-next-0.3.1)
has something like this, a "copyleft sunset" provision, whereby the
copyleft conditions of the license cease to apply 15 years after
initial distribution of the work.

Richard