In reference to the patent: US 8,384,613
What one has to do, if this patent is not new and just gives the same idea patented in 1990?
I would be grateful on an answer.
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Any claim that covers embodiments rendered obvious by the description of the previous patent is invalid.
At first glance it appears that the newer patent adds a lot of constraints to the structure; these additional constraints might not be obvious even if the purpose of the invention is the same.
Just because a car has already been patented doesn't mean you can't patent a car. You can still patent a car that has specifics to it that are not rendered obvious by any previously described car. You just can't patent a car at the same level of generality anymore.