For the product, you need to appoint an IP attorney to carry out the relevant searches on your behalf to see if any existing designs are currently out there thats protected. This is well worth doing as it will give you a good idea on how to drive your product during its infant stage of development.
It will be good to find the existing product and then adapt your ideas to it to make it better. The improvements and relevance you plan to make will determine the feasibility of your product.
If you are interested then get in touch and I will advice a good patent attorney.
The thing that interests me most about IP is not so much what can and can't be protected by some kind of legal instrument, but what you can realistically do in the event of infringement. My general impression is that the onus is on you to take action and this takes substantial resource and expertise.
Is this consistent with other peoples' understanding??