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How could the goverment grant this patent number w0199603864a1,when Rodney M McGee Sr. invented this in patent number 4858456 in 1988.

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It seems the US goverment don't mind giving a patent to big companys,that someone else has allready patent.. –  user9898 Jun 23 at 2:43
    
Not correct - W0199603864a1 is not a granted patent. –  George White Jun 23 at 4:03

1 Answer 1

The easy answer to the question is No patent has been granted.

The document you are referring to, W0199603864a1 is not a granted patent. It is not even a U.S. national patent application at this point. Documents starting with WO are international PCT (Patent Cooperation Treaty) applications. I have not compared the substance of the two documents but any new application should not ultimately issue as a patent unless its claims define something new and non-obvious.

Sometimes a claim is written so specifically and narrowly that while it is different than what was was done in the past, but nobody cares. A very narrow claim can generally be gotten around easily. The claim 1 in W0199603864a1 is one of the longest claims I have seen and may be in that category.

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