The foremost is to ensure that you provide an invention which is unique and new that actually qualifies for a patent. When there is already something that is comparable, then filling to get a patent would have been a waste of time. To save yourself time, look at the data base on the USPTO website and find out in case your idea continues to be considered before and it is already legally covered. Whether it has not been covered yet, then proceed with your invention.
When making your invention, make sure you take notes and work from drawings. It is best to do the drawings yourself. If you outsource your idea with a low priced draftsman, you will must prove the concept was yours if the draftsman beat you to the filing application for the invention.
Your invention is an step up from a current product which has commercial value. This is an important concept to remember. If the invention won't benefit the public, a patent will never be awarded.
When declaring the patent, there are services that can assist you to get a price. You are able to hire a lawyer which nearly always are more expensive, or you can diy. The benefit of having a lawyer is the method following the application is submitted. Nearly all are rejected through the USPTO upon their first submission and definately will need adjustments to the application form for the submission to become reviewed again. Lawyers concentrate on el born area and will help speed up this area of the process.
Remember, getting a patent isn't necessarily easy because you have a great invention, politics are participating as the US government is involved.