Earlier this year when I decorated shirts for my customer with the logo that is in the picture, the customer and I agreed that we would leave the "R" mark off because it would be too small to do in rhinestones and they didn't want it embroidered.OK - Now, the question. When can you use the "R" mark? After you have made an application for a Trademark? Or anytime you have an original design? Or just when you do a custom design for a company with a registered trademark, which I'm sure you could use it then. I'm just a little confused on when and where to apply the "R" and under which circumstances.