It really doesn't matter. If you want to sell products into the US or the industrialized world in general, you are put at risk by the patent system.

Sure... But as i see, the patent system in US is a mess. That can make my business fragile : I develop some app and then some troll sues me, so now instead investing in innovation , i have to invest my lawyer !

Maybe you have to do more paperworks in other Countries (ex. Germany) but your business is not in danger because bad use of patents. Sure other countries have also patent trolls but the system is not bad and currupt as US.

What I'm saying is that being based somewhere other than the US does not make you immune to the effect of US patents.

Even if you refuse to sell your product into the US market (good luck), as in this case, your customers can be sued in the US.