Hi again, Erich,
I misspelled in the last phrase of my message...it should be "if someone complained" rather than "of someone complained," of course.
I took a look at the trademark search at the USPTO (Patent and Trademark Office) and it looks like there are NO current trademarks registered with my initials (RJK), so I gather a trademark registration would be relatively simple. If you use the simplest and cheapest application, it is $225. To get this reduced fee, all you have to do is agree to do the whole thing by email and pay in advance. So it seems it would be simple. I'm not making enough at present to justify the expense, but if I get going, it will be easy enough to apply. There is a way to include your identifying graphics in the application. In other words, if your initials were taken, your initials in the design might make it anyway, I guess. You also have to specify a type of goods, so if you had a trademark for jewelry and someone else wanted the same for textiles, both could be allowed with the same text and graphics, I suppose.
There are a number of short videos about various aspects of applying. I looked at the first one to deterimine whether I could use the cheapest method of filing, and it was simple and understandable.
Nice to know the process is workable. Hope this interests you.