The Main Reason Why
You have to do (or hire someone else to do) a patent search before investing in the cost of patenting . Even if you hire someone else to do the patent search for you and that is highly recommended for beginners - do a preliminary search yourself and bring that research to the intellectual property attorney or agent that you hire . Doing so will save you money, plus provide the other benefits mentioned above.More on Prior Art
Remember, while patent searching is a big part of prior art , it is not everything. If someone has made your invention before you without patenting that still counts against your patentablity. A complete search for prior art might include for example: searching non-patent literature such as any magazine, newspaper, or trade paper article written about inventions like yours also a complete search would include international patent documents (online) and not just those found at the USPTO. Do not make the mistake of believing that just because no one else is selling your product that it does not already exist. After determining that your idea is patentable and qualifies for a patent - you now need to decide if the expense of patenting is worth it.The Average Cost to Patent an Invention
No entity that works professionally with the patent process publishes any average of the cost involved in patenting an invention. The U.S. Patent and Trademark Office simply publishes a list of the office fees, while the magazine IP publishes some ballpark numbers qualified with pages of discussion and the law firm Oppedahl Patent Law throws out a few numbers. state that an invention's complexity greatly determines the cost of the patent process.Is my idea already patented?
Most inventors dont really want to find their invention in someone elses patent, so the spend 5 minutes looking and then declare that they can't find it. It takes longer than that. If your invention is a mouse trap, you might find it by searching for those words...but the killer patent might instead describe a rodent restriction device or an automatic small animal containment system. Look for it like you want to find it. Talk to a registered patent attorney for immediate advice on protecting your idea (in the form of a provisional patent) while you determine if it is worth pursuing, in view of a preliminary search of related inventions, patented or not. Even if you don't find any "patents" showing your idea used in an invention, it could still be unpatentable because someone else used it or described it before you filed your provisional application.You Can't Be Too Obvious
Even if you don't find the prior art to prove it - you will not get a patent if your invention is not different enough from similiar inventions that are already out there. A patent maybe refused if the differences between your invention and another invention are too obvious. Your invention must be sufficiently different from what has been used or described before that it may be said to be nonobvious to a person having ordinary skill in the area of technology related to your invention . For example, the substitution of one material for another, or changes in size, are ordinarily not patentable. You can't paint it red and make it twice as big and expect a patent. Another example of "nonobvious to a person having ordinary skill in the area of technology related to your invention" could be the following. An electronics engineer looks at a circuit board and observes that it is just like another circuit board except that a few parts are substituted. Someone who is not familiar with circuit boards may not understand that the two boards are very similar, however, someone with training thinks that it is obvious. You would want the electronics engineer to look at the circuit board that you want to patent and say, "heah, why didn't I think of that!"