china patent 1443818 third-revision-of-the-implementing-regulations-of-the-patent-law-of-the-peoples-republic-of-china--reexamination-and-invalidation china patent 1443818 third-revision-of-the-implementing-regulations-of-the-patent-law-of-the-peoples-republic-of-china--reexamination-and-invalidation 
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