From what I understood once I have filled for a patent, I can't have a public campaign about the product as I have less chances for the patent to be accepted.
STOP. FORGET ABOUT A PATENT FOR NOW.
You don't have a plan for how you are going to sell your product. Everybody loves everything until you ask them to pay for it -- especially big companies with money to spend on your razzle dazzle new hardware. Why are you spending money on lawyers when you need to be spending money on a damn good business plan.
FUCK THE PATENT. SERIOUSLY....
Go do more homework before you decide to file paperwork. Keep that money in your pocket. Invest in exploring new sales channels, marketing ideas, and strategic distributor relationships.
