What happens when the PTAB issues a new ground of rejection in an inter partes reexamination?

When the Patent Trial and Appeal Board (PTAB) issues a new ground of rejection in an inter partes reexamination, it triggers specific procedures outlined in MPEP 2681: The decision is considered non-final for judicial review. The patent owner has one month to choose one of two options: Reopen prosecution by filing a response with amendments…

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