So, to expand on that, at least in US law (and I’d assume elsewhere), if you let people use your trademark for other products and don’t legally challenge it, the trademark can become genericized, which means that you lose the exclusive right to use it.
I don’t know if that was the concern here, but generally, it’s true that there’s an obligation on trademark holders to actively defend their trademarks or lose them.
So, to expand on that, at least in US law (and I’d assume elsewhere), if you let people use your trademark for other products and don’t legally challenge it, the trademark can become genericized, which means that you lose the exclusive right to use it.
https://en.wikipedia.org/wiki/Generic_trademark
I don’t know if that was the concern here, but generally, it’s true that there’s an obligation on trademark holders to actively defend their trademarks or lose them.