All rights reversed

All rights reversed is a phrase that indicates a release of a publication under copyleft licensing status.

[2] "All Rights Reversed" (sometimes spelled rites) was used by author Gregory Hill in his Discordian text Principia Discordia.

[3] In 1984 or 1985, programmer Don Hopkins sent Richard Stallman a letter labeled "Copyleft—all rights reversed".

Stallman chose the phrase to identify his free software method of distribution.

[5] That said, the use of the reversed copyright symbol is considered legally risky by the Free Software Foundation.