In certain situations, I've seen Responsive Design websites with duplicate content on the same page. The pages had duplicate HTML structure and content in some parts of it due to Responsive Design.
For example, a menu structure for mobile layouts, and then a separate menu structure that is only for tablet + desktop layouts.
So in these situations, where you have content duplicated on the same page, simply because a user was forced to separate their HTML structures to respond to different layouts, does this have any negative SEO ramifications?