"The lawsuit would be of the form "you do not have a license to distribute the code under those terms"
1/ the suing party would have to have standing... so essentially Oracle
2/ the suing party would still have to substantiate their accusation, in which case the obvious 'defense' is to disprove the actual substantive claims.
PS: no party could make such a blanket claim... just like, if you publish a book I cannot just 'claim' that you are not the author, I'd have to point to a least a part of your book for which I can prove that I am the author... and that I did not license that part in a way that allow you to re-use it.
Posted May 31, 2012 8:42 UTC (Thu) by jamesh (guest, #1159)
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So, Oracle (or whoever else holds copyright) could point to the public version control history of LibreOffice and show that it was clearly derived from the LGPL'd OpenOffice.org code they released. Therefore, they must be relying on the LGPL to distribute modified versions of that code. If the defendant is not complying with the LGPL, then that could be enough cause for the law suit.
The "What colour are your bits?" essay that was linked earlier is an interesting read and might give some perspective for this kind of concern.