"Bang for the buck", your US Patent is your best value worldwide. I didn't say you needed to file everywhere - in fact you can't. You get to nominate in the WI

"Bang for the buck", your US Patent is your best value worldwide. I didn't say you needed to file everywhere - in fact you can't. You get to nominate in the WIPO process which countries you want to execute with. The international examiners also give a lot of good feedback as they have a lot of experience about the individual countries - e.g. This will have problems in EU, but is fine in the US. So if you decide the US is enough, that's fine - if you decide EU, US, AU, JP, that's fine too.