1. Yes. However, most chinese companies do not respect patents at all. If you want to fight them in court, make sure you have the money 2. You can apply for the priority rights instead. 3. No. 4. No 5. Of course yes. Do not pay yourself salary, because that means a lot more tax and fee. LLC works like a pass through. All profit is considered as your income. Your biggest challenge is marketing in US. I also think Chinese market is important so do not just focus on US market alone.