if you build a better mousetrap and the world will beat a path to your door

if you build a better mousetrap and the world will beat a path to your door means that if you develop or invent something superior to a device that is widely used, you will soon have the recognition of inventing this device. The phrase isnt used very often but you can occasionally hear people say it or read it used in articles, blogs or even short stories and fictional novels. The phrase basically means that if you are to invent something that is better than what is used for its purpose, you will be noticed.