On 2015-08-21 19:18, Paul Koning wrote:
Wikipedia has a lot more detail, but from what it says, in the USA the answer 
is 75 years from publication, if copyright was in effect at the beginning of 
1978 or if the work was created since then.

I believe the USA signed the Berne convention (although pretty recently compared to when it was written). And then it's 75 years from publication (I think) for companies, but 75 years from the death of the author when the copyright owner is a person.

(It used to be 50 years, but when the 50th anniversary of Hitlers death came about, they extended it to 75 years, to keep Mein Kampf away from the presses... :-) )

        Johnny


        paul

On Aug 21, 2015, at 1:11 PM, Rod Smallwood <rodsmallwoo...@btinternet.com> 
wrote:

Yes OK and "very long"  would be?

On 21/08/2015 18:03, Paul Koning wrote:
On Aug 21, 2015, at 12:58 PM, Rod Smallwood <rodsmallwoo...@btinternet.com> 
wrote:


So what is the lifetime of a software copyright ?
The same as any other copyright.  It depends on the country, but in general the answer is 
"very long".  In the USA, recently copyrights have been extended repeatedly, in what has 
been referred to as the "Mickey Mouse Protection Act".  (It's called that because it was 
crafted to ensure that no Disney movie copyright will expire.)

        paul




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