Those are copyrighted. Mouse Traps was short story whose author escapes me. The Maze Rats were a faction in AEG's Doomtown game.
More than one novel can have the same title. It gets confusing at times, but I have seen different stories (as in different authors, plots, themes, publishers) with the same title.
One that comes to mind is "The Bodyguard"
The Bodyguard is a book by Christy Tillery French, Lawrence Kasdan, Robert Tine, Robin Covington, Suzanne Brockmann, and Cherry Adair - or rather each of the above listed authors wrote a different book that is titled "The Bodyguard".
For that matter, do you know who Harry Potter is? Of course you do - he's a minor character in
Spell of Catastrophe by Mayer Alan Brenner, a book published in 1987.
And no, Brenner doesn't get royalties from Rowling because he used the name first. His Harry Potter is a small time crook (forger if I remember it right) and potter in a high fantasy / sci-fi book, not a boy wizard who goes to wizarding school.
Richard