i invented a product. confidentiality agreement in place. a billion dollar a year company wants to patent. they have made offer of 7 years and 7%, no upfront at this time. why shouldn't the time frame be for the life of patent/life of product? what is the typical amount a company is willing to trade in upfront $$ for percentage of royalty? if i were to give up 2% on the royalty what should they put upfront for a licensing fee?