There are many patents around. Some of them are already expired though. For instance the arithmetic coding patents needed for jpeg are expired, yet almost no b

There are many patents around. Some of them are already expired though. For instance the arithmetic coding patents needed for jpeg are expired, yet almost no browser supports it: https://bugzilla.mozilla.org/show_bug.cgi?id=680385 https://bugzilla.mozilla.org/show_bug.cgi?id=680385