Is it worth pursuing a patent for something that seems like a variation of what someone else has already submitted an application, advertised, published, created or marketed, etc?
How "different" must an invention be (i.e. how is it defined) from one that is similar to be legally patented by someone else?
Over the course of my adult life, I've thought of a myriad of "inventions"; that is, until I did a patent search only to find someone has already beaten me to it. Some examples were my Triple Bunk Beds, Bicycle Seat without the piece that hurts your crotch and most recently, a Stink Bug Trap. While each is not exactly like mine, it is enough like it that anyone could potentially cause legal problems for me if it made it to market.