Hasbro acquired the rights to produce Disney Princess dolls from Mattel in 2014.
The agreement made Hasbro the principal Disney Princess and Frozen dolls licensee beginning in 2016. The change was commercially important because Disney Princess was one of the world’s best-known character-merchandise brands, while Frozen had become a major global phenomenon after its 2013 release.
Mattel had previously held the Disney Princess doll license. Hasbro’s arrival shifted a major category of Disney consumer products to a different toy company and gave Hasbro control of doll development, packaging, and retail distribution for the licensed characters.
The dates are often mixed up: Hasbro won the rights in 2014, but its products began reaching the market in 2016. The answer is Hasbro, not Jakks Pacific, which has produced other Disney-related toys and figures but did not replace Mattel as the main Disney Princess doll licensee.