Here is just a short list of titles that overlap:
28 days vs. 28 Days Later
Monsters Inc. v. Monsters Ball
Aristocats vs. Aristocrats
Black Sheep vs. Black Sheep
But wait a second: aren’t names and such (anything that is a creative work) protected by copyright? Nope, not really short phrases, of which titles, be it a book or movie title, falls victim. Names and short phrases such as “Live, love laugh” just don’t exhibit enough creativity to be protected in the same way that a full-length book or movie is. Or at least that’s what the Copyright Office has specifically declared in its decree that all words embody a “minimum amount of authorship in the form of original literary, musical, pictorial, or graphic expression.”