The Beastie Boys, Rick Rubin, Island Def Jam Music Group, Sony Music Publishing Group and Universal Music Publishing have all been named as defendants in a lawsuit filed by Goldie Blox toy company this past week, according to SPIN.

Goldie Blox is heading to federal court to settle the issue of whether or not they committed copyright infringement with their parody video of The Beastie Boys’ “Girls.” The toy company’s video features girls creating a complex chain reaction while their own version of the 1986 song plays in the background.

The Beastie Boys have released an open letter stating that they’re being sued by the company for trying to protect the use of their own song. They go on to explain that they fully understand and appreciate Goldie Blox’s attempt to encourage young girls to become engineers and to fight gender stereotypes.

Read the letter below:

Like many of the millions of people who have seen your you commercial “GoldieBlox, Rube Golberg & the Beastie Boys,” we were very impressed by the creativity and the message behind your ad. We strongly support empowering young girls, breaking down gender stereotypes and igniting a passion for technology and engineering.

As creative as it is, make no mistake, your video is an advertisement that is designed to sell a product, and long ago, we made a conscious decision not to permit our music and/or name to be used in product ads. When we tried to simply ask how and why our song “Girls” had been used in your ad without our permission, YOU sued US.

–Keith Reid-Cleveland