What are the estoppel effects of inter partes reexamination?

What are the estoppel effects of inter partes reexamination? Inter partes reexamination has significant estoppel effects that can impact future proceedings. The MPEP explains: “A third party requester is estopped from later asserting in any civil action, or in a subsequent inter partes reexamination, the invalidity/unpatentability of any claim finally determined to be valid and…

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