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From Arnoud Engelfriet <>
Subject Re: Question on The Apache License 2.0
Date Thu, 19 Feb 2004 14:04:04 GMT
Thomas DeWeese wrote:
>        [...] where such license applies only to those patent claims
>        licensable by such Contributor that are necessarily infringed
>        by their Contribution(s) alone or by combination of their
>        Contribution(s) with the Work to which such Contribution(s) was
>        submitted.
>     The troubling part of this is the 'by combination of their
> Contributions(s) with the Work to which such Contribution(s) was
> submitted.'  The question is does this apply retroactively?

My reading of that phrase is only the patents embodied in the 
Contribution are licensed. The license permits combining the
Contribution with the Work, but does not require licensing of
patents in the (rest of the) Work.


Arnoud Engelfriet, Dutch patent attorney - Speaking only for myself
Patents, copyright and IPR explained for techies:

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