United States:
The Equitable Doctrine Of Assignor Estoppel Does Not Prevent PTAB From Instituting An IPR, PTAB Litigation Blog
21 October 2016
Jones Day
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On July 25, 2016, the United States Court of Appeals for the
Federal Circuit issued a decision in In re: Magnum Tools Int'l, Ltd., No.
2015-1300 (Fed. Cir. Jul. 25, 2016) confirming that the burden of
proving invalidity lies with the petitioner throughout the entire
IPR proceeding and never shifts to the patent owner. In
Magnum Tools, the court disagreed with the PTAB's view
that institution of an IPR upon a finding of a reasonable
likelihood of success operates to shift the burden of producing
evidence of non-obviousness to the patent owner.
Read the full article at the PTAB Litigation Blog.
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