Venice, CA – Stereogum, Pitchfork, and The Fashion law have the details:
https://www.stereogum.com/1968291/classixx-sues-hm-over-classixx-tops/wheres-the-beef/
https://pitchfork.com/news/classixx-sue-handm-for-trademark-infringement/
http://www.thefashionlaw.com/home/hm-denies-knowing-dj-duo-despite-playing-their-music-in-its-stores