Comment by bawolff

> If they weren't trying to trademark "Deepkit" why would you feel the need to attempt to block it? It feels unnecessarily hostile.

IANAL and dont really know, but my understanding is many places require you to defend it in order to keep it. If you become aware of something and fail to try and block it, that can be viewed as you've lost interest in the trademark and result in it being taken away from you.