IF jotspot and spotnjot are registered marks, you may want to further explore the classifications of said marks (i.e. Class 1 Chemicals) and, therefore better determine factors such as the "likelihood of confusion" that your domain could intrude on their intellectual property (TM) and potentially confuse a consumer and/or dilute their trademark in the marketplace. This is a very common issue and often leads to litigation - that is IF you pursue posting the domain in commerce AND they elect to pursue their claim(s). The advice to check the TM status in advance to registering the domain makes good sense. That said, many entities also register domains in defense of the mark so as to avoid possible intrusions - maybe a revenue option to sell the domain to the holder of the mark(s). Likewise, using "TM" in the upper right position of your name affords "unregistered trademark rights" which MAY offer a defense in the future.
Good Luck!
P.S. No. I am not an attorney. Just an experienced marketer.