Kraftwerk is suing the company eZelleron for using their name in a product. But the it's not as obvious as it may seem.
The company launched a Kickstarter campaign for a "highly innovative portable power plant." It wasn't quite as innovative perhaps as it could have been though, since they decided to name the product the exact same thing as the German electronic group. It's also not clear if it's quite as powerful as an actual power plant.
Having said that, YourEDM.com points out that "kraftwerk" is the literal translation of the word "power station" in German. While this certainly complicates the lawsuit, it also makes the name that much less innovative.
eZelleron was founded in Germany which would seem to support their use of the term, but the company is now based in Delaware according to Kickstarter. Kraftwerk (the band) is obviously stating they may be associated with the device. This would be especially true for international usage of the term.
The kickstarter campaign for the charging device netted over double their goal, reaching $1.5 million, making it a success. It also has received notice from several major magazines and tech sites.
So there you have it. Your German lesson for the day.