I've read the thread for the AA logo, and yes, they assimilated a
symbol used in magic to contain spirit within wholeness, or the
spirit in the microcosm. I think that there is no concern with
returning the symbol to the public domain, because it has never left
The way I understand it, a logo is merely a symbol associated with a
company or product -- a branding. It is supposed to be unique. If
a case ever came to court, it wouldn't take a gifted lawyer to prove
the long history and public useage of this symbol. Therefore, it's
uniqueness in association with AA was a legal "loophole" agreed to
by people who were unaware of the permeation of public useage. Now
if it is found in association with the words "Alchoholic's
Anonymous" or "AA", they could prove infringement, but not with the
symbol by itself.
As an aside, I think that it was a wonderful symbol for AA to
choose, given it's meaning. I just don't believe that AA has sole
claim to it.