The copyright of the recording, STICKY FINGERS is owned by Promotone. No one else can release the songs under that title and with that cover art. The publishing rights to the orginal songs on the album are controlled by ABKCO. The ABKCO settlement allows their use of the individual tracks from STICKY FINGERS for compilations without having to obtain the permission of Promotone.
When STICKY FINGERS was first issued, there was no copyright listing on the album as it was not yet finalized in April 1971. The trademarking of the band's name and logo by Musidor was the only legalese noted on the sleeve and back cover (apart from ABKCO's song publishing credit). EXILE is the first release listing Promotone as copyright holder. Klein could have made a bigger deal about actually owning the STICKY FINGERS album legally. I presume he took a pay-off to let it go.
This also explains why he has access to the outtakes and did not need Promotone's permission to release them. When the band last sued ABKCO in 1984, it was over unpaid royalties and the release of archival material deemed substandard and damaging to their reputation (specifically METAMORPHOSIS and the then-current REST OF THE BEST box set). You can find greater detail (or proof that I'm not making this up) in The New York Times' archive for 1984. Information on the October 1970 copyrighting of unreleased songs can be found at [
www.copyright.gov]
This is the site where I discovered things like the early outtake frequently bootlegged as both "Goodbye, Girl" and "Get Back To the One You Love" and credited on many boots as a Bill Wyman composition was registered in early 1965 under the title, "The One You Love" with Jagger/Richards as authors. You can also find the October 1970 listing for "@#$%& Blues" d/b/a "Lonesome Schoolboy Blues" and plenty of others. Even the non-circulating "Blow Me, Mama" was registered for copyright in early 1968 with the requisite audio tape submitted for copyrighting songs. Somewhere in the copyright office archives, doubtless deteriorating with age, are dozens of unreleased Stones songs and simple demos of early Jagger/Richards songwriting efforts without the dreaded overdubbing and remixing Andrew Oldham gave them for METAMORPHOSIS. The very thought makes my mouth water.