PTAB Finds That Identical Prior Art Cited in Separate Petitions for Inter Partes Review May Lead to Different Results

Dec 3, 2014

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In rejecting petitioner’s argument, the board found that the evidence (three different expert declarations) presented in the three petitions was not the same evidence because “[t]he differences between [the expert’s] declaration in the present case and the one submitted in the [related] proceeding are material, and lead to the different results in our institution decisions.”

The petitioner also argued that “[the board’s] ‘conflicting decisions’ in this and [related proceedings ‘undermine the predictability and uniformity of decision making by the PTAB. The board disagreed, stating that the decisions were not in conflict “because of the different records presented in each case . . . . The question before the board is whether petitioner has shown that the record in this proceeding establishes a reasonable likelihood that claims are unpatentable.” Further, Judge Crumbley noted that “[i]nter partes reviews are adversarial, adjudicative proceedings . . .  [t]he rule [the petitioner] proposes—that every petition citing the same art must be decided identically, regardless of the arguments set forth in the petition—ignores the adversarial, adjudicative nature of an inter partes review.”

Petition for Inter Partes Review by Mitsubishi Plastics, Inc., IPR2014­00524 (PTAB November 21, 2014, Order).

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