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bkuhn
Preservation of implied patent license is unique.

This footnote, co-drafted by me and Richard Fontana, explains the
apparent uniqueness GPLv3's preservation clause for GPLv2's original
implied patent license.

Fontana pointed out this distinction with commercial patent licensing.
I noticed as a further point that even some copyleft licenses, let alone
non-copyleft Free Software licenses, fail to include any clauses
preserving implicit patent license grants. Such is certainly of concern
for those licenses that contain explicit patent licensing provisions.

Fontana notes that during GPLv3 process, he was concerned that an
explicit patent license in GPLv3 might provide a basis for some to later
argue an implied patent license was no longer present. GPLv3ยง11's final
paragraph assures its safety.
% third-party-citations.tex             -*- LaTeX -*-
%    Appendix containing all attributions in one place.

\chapter{Citations of Incorporated Material from Other Published Works}

As a public, collaborative project, this Guide is primarily composed of the
many contributions received via its
\href{https://gitorious.org/copyleft-org/tutorial/source/master:CONTRIBUTING.md}{public
  contribution process}.  Please
\href{https://gitorious.org/copyleft-org/tutorial/history/master}{review its
  Git logs} for full documentation of all contributions.

Below is a list of CC-By-SA-licensed works, with specific titles and
publication dates, from which any material was incorporated into this Guide.
The specific methods and details of incorporation are fully
documented in the
\href{https://gitorious.org/copyleft-org/tutorial/history/master}{Git logs}
of the project.

\label{third-party-citation-list}
\begin{itemize}
\item \hrefnofollow{http://gplv3.fsf.org/gpl-rationale-2006-01-16.html}{\textit{GPLv3 First Discussion Draft Rationale}}, published by the Free
 Software Foundation on 2006-01-16.
\item \hrefnofollow{http://gplv3.fsf.org/opinions-draft-2.html}{\textit{GPLv3 Second Discussion Draft Rationale}}, published by the Free
 Software Foundation circa 2006-07.
\item \hrefnofollow{http://gplv3.fsf.org/gpl3-dd3-guide}{\textit{GPLv3 Third Discussion Draft Rationale}}, published by the Free
 Software Foundation on 2007-03-28.
\item \hrefnofollow{http://gplv3.fsf.org/dd3-faq}{\textit{GPLv3 Discussion Draft 3 FAQ}}, published by the Free Software Foundation on 2007-03-28.
\item \hrefnofollow{http://gplv3.fsf.org/gpl3-dd4-guide.html}{\textit{GPLv3 Final Discussion Draft Rationale}}, published by the Free
 Software Foundation on 2007-05-31.
\item \hrefnofollow{http://www.gnu.org/licences/gpl3-final-rationale.pdf}{\textit{GPLv3 Final Rationale}}, written and published by the Free
 Software Foundation on 2007-06-29.
\item \hrefnofollow{http://www.softwarefreedom.org/resources/2008/compliance-guide.html}{\textit{A Practical Guide GPL Compliance}}, written by Bradley M. Kuhn, Aaron
Williamson and Karen Sandler and published by the Software Freedom Law Center on 2008-08-20.
\item \hrefnofollow{http://www.softwarefreedom.org/resources/2014/SFLC-Guide_to_GPL_Compliance_2d_ed.html}{\textit{Software Freedom Law Center Guide to GPL Compliance, 2nd
 Edition}}, written by Eben Moglen and Mishi Choudhary and published by the Software Freedom Law Center on 2014-10-31.
\item \textit{Detailed Analysis of the GNU GPL and Related Licenses}, written by
Bradley M. Kuhn, Daniel B.~Ravicher, and John Sullivan and published by the Free Software Foundation for its CLE courses on 2004-01-20,
2004-08-24, and 2014-03-24.
\item \textit{Enforcement Case Studies}, written by Bradley M. Kuhn and published by the Free
 Software Foundation for its CLE courses on 2004-01-20, 2004-08-24, and 2014-03-24.
\end{itemize}

Please note, however, that this list above does not include nor adequately
represent the substantial contributions from those who directly
contributed to this Guide using its Git (and formerly, CVS) repository.
Rather, this is a list of third-party published works from which any text was
herein included under their CC-By-SA licensing.  Thus, as the reader might
expect, the
\href{https://gitorious.org/copyleft-org/tutorial/history/master}{version
  control logs} contain the only true and accurate view available of who has
contributed which portions of this project.