David Koh and Lilly Bright negotiated the deal on behalf of Arthouse Films and Curiously Bright Entertainment with Josh Braun of Submarine Entertainment representing the film-makers.
Jesse Moss and Susan Korda produced and Vanessa Wanger served as executive producer on the profile of the late civil rights lawyer's life and times. Arthouse plans a mid-2009 release.
The Disturbing The Universe and Independent Television Service co-production will premiere on the PBS series P.O.V. in 2010.
Earlier in the festival Arthouse swooped on Art & Copy, which also premiered in the US Documentary Competition.