Based on the report by Munhwa Ilbo, the English music publishing company WISE MUSIC GROUP hired a law firm in South Korea in June of this year, then sent a Letter of Claim to six recipients including ADOR, HYBE Labels, the Korea Music Copyright Association (KMCA), Sony Music Publishing (South Korea branch), and more.
The Letter read, "We have confirmed that the song 'Bubble Gum', composed and written by 250, Oscar Bell, Sophie Simmons, and Gigi and sung by NewJeans, is using components of the song 'Easier Said Than Done' by Shakatak without permission from WISE MUSIC GROUP. As a result, we demand immediate measures of response, including the discontinued sale of 'Bubble Gum'."
WISE MUSIC GROUP added on, "We have included detailed demands including the discontinued sale of 'Bubble Gum', the reporting of all profits from this work, a legal change in ownership, a seal, and payment for damages." The Letter also outlined components which WISE MUSIC GROUP believed to be the cause of the accused copyright infringement.