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Terragen is already the name of a 3D terrain generator/renderer. https://en.m.wikipedia.org/wiki/Terragen

I’m pretty sure your company can be sued for trademark infringement.

I don't know much about trademarks, but from a quick search I found there are two terragen's that exist, one for agricultural stuff and one for something like rubber? (according to the classes associated to the trademarks).

Are names automatically trademarked? Or did I search incorrectly? (I did only search on the UK and US pages though)

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