How to Make a Trademark Verb?

Haman yon te says, d j colling, atlanta, i have a question about what you do with ta registered trade mark sign at the end of the word. So for example, the word realter, the final r is followed by the registered trademark sign. When you make it possessive, you stick an apostrophe s in there. But where does the register trademark land? Does it stick with the final r, or does it go after the s at the end? And then the same question for the plural version of the word riltors - does the regist trade mark stick with the r, ordoes it follow the s atThe end? Haman y