Gaye's offspring accused the publishing company officials of protecting Thicke and his collaborators over claims they had sampled heavily from their father's back catalogue.
The new agreement means that Sony/Atv executives will not be part of a potential trial between Gaye's family and Thicke, who struck the first blow in the six-month-long legal battle when he sued Gaye's kids to protect Blurred Lines from a potential plagiarism suit.
Thicke was seeking declaratory relief that his hit song wasn't an improper copy of Marvin Gaye's 1977 hit Got to Give It Up.
Gaye's children Marvin Gaye Iii, Nona and Frankie Christian Gaye have since launched two separate countersuits against the singer, claiming he and producer pal Pharrell Williams committed copyright infringement on a number of songs.
Thicke, Williams and their collaborator on Blurred Lines are also facing similar claims from Bridgeport Music bosses, who own the rights to George Clinton's band Funkadelic's compositions - they alleged the tune bears striking similarities to Funkadelic's track Sexy Ways.
Late last year (13), Thicke revealed he was eager to reach a settlement to avoid a court battle with his idol's relatives, but they reportedly rejected a six-figure sum.