No. The provisional application does not get examined.

Does http://tmsearch.uspto.gov/ check the whole country for trademarks already registered... i found one but its dead for years

Failure to find a federally registered mark, does not mean that someone is using the mark, but has not sought to obtain a federal registration. ...

Can I file suit or a claim?

Unless they gave a guarantee, I doubt if you have much of a chance of recovery of any damages. Frequently, examiners find art that they think is...

Whats the cost range for a simple medical assistive device, non-electric, non - biologic patent application including search?

A minimum of $5000 plus search cost.

Can I purchase someone's or a company's cosmetic, enchance the cosmetic, patent, and sell it to the public

If you "enhance the product", the difference must be non-obvious.

Filing Design Patents in the U.S. and EU. How soon after filing in the U.S. do you have to file in the EU?

You will need to file within 6 months of the US filing date. Europe also provides other design protection.

If a utility PPA with 1 product design has expired for full filing on a 2nd design with the same functions, can it be protected?

If more than year in public use, the new ornamental structure must be different then shown in the expired utility application, even through...

Do a google search and a uspto search so to your satisfaction your product is new.