Including TM, (R), and (C) in stories

I've often wondered why people put trademark, registered trademark, and copyright indicators after the names of certain products or organizations. I can understand why it's important to show respect for someone's trademark or copyright, but is it mandatory to put such indicators in the middle of a piece of fiction?

Usually when I see something like the following,

I went to McDonald's(R) and ordered a burger and fries.

I don't read it as,

I went to McDonald's and ordered a burger and fries.

Instead, I read it as,

I went to McDonald's registered trademark and ordered a burger and fries.

Am I the only one who feels like the flow of the story is interrupted when these indicators have been put in the middle of a story? Would the beginning or end of a story be better places to let people know who owns which trademark or copyright?