A number of sizable and well-respected law firms will take your case on contingency if they believe that it is a good enough case and you can win. Upside is tha

A number of sizable and well-respected law firms will take your case on contingency if they believe that it is a good enough case and you can win. Upside is that you can get good lawyers able to help you, and if you lose, you won't be out the lawyer's fees. Downside is that if you win, you will pay a substantial percentage (30-50%) in fees, largely due to the increased risk that the firm takes on. Also, whoever said to sue for IP infringement may be worth listening to. 12.5M for a patent judgment is low.