Is a patent app a product killer?
imp: Your only option is to talk to a lawyer.  This sounds serious enough that you should get a professional opinion on this.  They should be a patent attorney that would look over the specific details of the patent and compare that to what you want to do.  There could be a tiny loophole that allows you to do what you want to do.  You just can't tell without talking to a lawyer.Also, there was some famous businessman that said "I don't ask lawyers 'What can't I do?'. I ask them 'How can I do what I want to do?'".