So google owns the "image and text box on a web page" design?
That's a little more than just aping the design of Google. It's a pretty intentional effort to deceive users into remaining on Bing.
> This morning, users are discovering that if they search for “Google” in the primary Bing interface, they’re shown a special Bing search page. Before you scroll down to the actual search results, you’re presented with an all-white page with a centered, unbranded search bar and a multicolored doodle above it that’s heavy on yellow, red, blue, and green.