It seems [1] that there are mixed opinions about the matter. I'll check with fedora-legal. In any case, things like this [2][3][4] are really sad.

[1] https://fsfe.org/campaigns/swpat/swpat.en.html
[2] http://david.freetype.org/cleartype-patents.html
[3] https://www.gnu.org/philosophy/europes-unitary-patent.html
[4] http://www.epo.org/news-issues/issues/unitary-patent.html

2015-06-10 20:30 GMT+02:00 Bruno Wolff III <bruno@wolff.to>:
On Wed, Jun 10, 2015 at 19:59:05 +0200,
 Ahmad Samir <ahmadsamir3891@gmail.com> wrote:

The funny thing about the MP3 patent expiring is that really MP3 is
going away, and has been going away for some time now; AAC encoded
audio in an MP4 container is becoming more prevalent these days, and
of course AAC is another codec you can't legally add in a distro that
resides in the u.s. .... so it looks like a race, one that Linux is
losing unless users add 3rd party repos that can package those
patent-encumbered codecs; 3rd party repos have a lower risk of getting
sued, since they're individuals and suing them wouldn't bring in that
much money anyway (you need to sue a big wealthy company to justify
the lawyer hourly fees :)), of course IANAL, so don't take my views on
legal matters to heart.

Opus (https://en.wikipedia.org/wiki/Opus_%28codec%29) has become an important audio codec that doesn't have patent problems.



--
Álex Puchades