Patent attorney's are a rare duck. The good ones are limited to a handful per metro area. You need to be prepared to spend some serious cash upfront and periodically as the patent process advances. I would estimate a minimum of $15000.00 and probably higher. It will give you limited protection, each country has to be registered individually, with a few exceptions, and if a Chinese manufacturer knocks you off, nothing will protect you, anywhere. Other knockoffs will have to be defended by your dollars, again. The other thing you might consider is copy right protection, which is usually a "written word" type of coverage. Which is much easier, cheaper and might give you essentially the same coverage, a whole lot cheaper. I am not an attorney, just a layman experienced with the process. Good Luck.