回复：问：美国专利申请及专利律师选择？

Q1.申请费：$5000,Utility Patent，包括律师费、查新费、和申请官费；
A1: Sounds low

Q2、国内已申请专利，对美国申请有什么影响？
A2: If US application not filed in time, the Chinese one, once published, can become prior art and be used against the US application.

Q3、可否用中国申请优先日？
A3: Yes, if in time.

Q4、专利pending阶段，产品展览有没有影响？
A4: most likely, no

Q5. 问律师一小时要几百，先谢各位回答。
A5: $250-550/h, depending on firms.