Using the name either the name itself or sub domain is trade mark violation.
It's also based on how you use the TM and if you have TM bidding rights from your affiliate.
1st Amendment,
Toyota.isabadmanufacturingcompany.com
Cocacola.isabadmanufacturingcompany.com
For as long as it's an open discussion and you don't try to sell their products or competitor products on the website.
As far as TM bidding, let's say there's a 100% all herbal ED pill on the market called Ladies Pill. If they allow free use of the TM, you can sell that product on the domain theladiespill.com.
Though you have vague information, those are two ways you can use a TM fairly.
Lawyers will hound you over the 1st Amendment one, but I just reply, "thanks for your time-- I'm sure your client likes to be billed for already known information since you are barred and practice and it's most likely in one of those books behind your desk collecting dust what fair use of a TM isâ (usually on the 3rd request to take it down immediately, I will respond sarcastically)
If you provide more info on how you will specifically use the TM, it would help out much more.