Read the PTAB rules and guidelines, read Worlds briefs and listen to the oral arguments then you will be enlightened by the distinction clearly outlined therein as the basis by which the CAFC, a judicial body is not bound by the PTAB, an administrative body and their clearly defined limitation and constraint to construe contract terms as a matter of law, which provides CAFC with their lawful option to vacate if they so choose.
As I have stated here before, CAFC may remand or they can vacate, no one knows but to boldly state that you are 100% certain of a remand is pure nonsense.
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