2) Sounds like You have the intent to expand your business.
3) What is this other person? Company, crackpot, businessman?
4) Sounds like he is really streaching. There must be other examples of people
using the same phrase.
5) You don't have the name registered, you are using the words descriptivly.
You should look into registering.
6) If you are going to resist, hire a lawyer to produce a
letter with all your findings and politly tell him to go
away
7) Any mark is only worth what people are willing do (pay $$) to defend.
8) I would be curious, about this guy's web site and the tags he uses.