We sell products compatible to Adafruit products, and we have a statement (email to me) from Adafruit that it would be allowed to call our own products for example "compatible to Neopixel" or "Adafruit Neopixel compatible". Adafruit's Limor Fried is bigmouthing about how great they do for the Open-Hardware and Open-Source community, but on the other hand they keep opening intellectual property infringement claims on Amazon against our products, and have our products removed, risking our reputation and Amazon account health, despite the clear description of our products to be "compatible with Neopixel library for Arduino", for example. The only reason for this acting is, that Adafruit wants to sell their own, big time overpriced products, and fights other sellers of equal hardware. Limor if you don't want that other companies make the same products and say that their products are compatible to your's, then just change the license you use. To take somebody else's product (WS2812B LEDs), and give it your own brand name, and then fight everyone who mentions the compatibility with your product, is effrontery.