I make up domain names, through seeing or hearing a word or words, or an expression, or a sound, or a feeling and play around with characters before coming up with the domain name.
I will also often play around with characters from a company/brand that already exists and/or make small changes to come up with a name. After registering the name, I put the name up for sale, as selling domain names is my only purpose in creating them.

Usually, I run the name I have come up with through TESS for trademarks (all 3 search modules) and then do a G search too, to see what comes up, as well as typing the name in the browser address bar (which is usually the first thing I do). I then register the name if no trademarks or search results show anyone might have a claim to it.

Recently, I made a up a domain name with two words, one a very common word everyone would know and the second word that I made up, as it sounded good/interesting. I put the two word domain name through TESS and also searched on G and all was clear. So I registered it.

The other day, I got to thinking about the 2nd word, which I had made up (in my mind) and I decided to see if it was a domain name and/or had a trademark. I found that it was a domain name and also, a live trademark, with a company currently trading with this word as its name.

My domain name is for a different market than the one the trademark is operating in, as would be obvious to anyone who saw my domain name.
My domain could not be used in a different area, again, owing to the first word.

My question is whether the company that owns the trademark would have a claim to the domain name I registered.