[burnte]

Some lawyers are more conservative about what they should and should not do. Apple's lawyers put it all on one page: https://www.apple.com/legal/intellectual-property/trademark/...

Other lawyers want it everywhere possible. It's not required to be everywhere, however, just sometimes.

I have one customer who is a franchisee and their franchiser company demands the (R) everywhere because their MARKETER think it's "impressive" to people.

[erichurkman]

One old company of mine had an awful lawyer that even insisted on putting 'SM' everywhere while we were going through trademark applications. There are still dozens of permanent installations of their branding that show BLAHBLAH(sm). It looks awful and served no purpose.

[pbreit]

That's a much better reason than the legal one, imo.