Probably the most famous example is Barbie Girl. The musical group Aqua created the song and was sued by Mattel. The toy company won the rights of the song because it was specifically using their product IP. They referenced specific features of the toy line, including the names of Barbie and Ken. Mattel was able to demonstrate that the song harmed their IP. That was the key feature IIRC. In the end, I think that it was ruled that the song was clearly a parody. So any harm that was caused, people would not assume was connected with the real-world toy.
Probably the most famous example is Barbie Girl. The musical group Aqua created the song and was sued by Mattel. The toy company won the rights of the song because it was specifically using their product IP. They referenced specific features of the toy line, including the names of Barbie and Ken. Mattel was able to demonstrate that the song harmed their IP. That was the key feature IIRC. In the end, I think that it was ruled that the song was clearly a parody. So any harm that was caused, people would not assume was connected with the real-world toy.