In the US, patents last at most 20 years under current law (and at the
time, I believe it was shorter, 17 years). See
http://www.law.cornell.edu/uscode/35/154.html (the current law), and
page 146 of the old law,
http://www.uspto.gov/web/offices/pac/mpep/old/E5R14_L.pdf . If Wikipedia
is to be believed, JPEG's design was complete by 1990, any patents
covering JPEG would either certainly have expired by 2010, probably
earlier, or would be bogus due to prior art.
I believe it's also 20 years in the EU and Japan and most other
countries.
** Changed in: libjpeg8 (Ubuntu)
Status: Incomplete => New
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https://bugs.launchpad.net/bugs/733092
Title:
libjpeg compiled without arithmetic coding support
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