I am assuming you are in the US? I'll assume you are. The fact that the patent has been approved proves that in the it can be, its a precedent and US law is precedent bound. As for lawyers, no you'll have to pay for your own lawyers.
I worked for a small logistics company that was developing a proprietary database which was to be packaged like a product. So as the head of HR I ended up doing the research on Trademarks & Patenting. To answer your question if you have a unique product or a unique take on a product you SHOULD p...
One approach would be to (1) Create a website from which your product can be purchased and downloaded; (2) Enable easy social sharing from the website so that happy customers multiply at no cost to you; (3) Market that site through PPC campaigns, targeting relevant search verticals. Basica...
My answer will be short: Definitely an app. I'll be more than happy to discuss details further.