Barco filed a patent infringement action in September 2011 against Defendants Eizo Nanao Corporation and Eizo Nanao Technologies, Inc. (“Eizo”), alleging that Eizo infringed various claims in U.S. Patent No. 7,639,849 (the ‘849 patent). After Barco filed a reissue application with the United States Patent and Trademark Office (the “PTO”), in which it added seventy-eight new claims to the original thirty-seven claims of the ‘849 patent, the district court stayed the action.
Eizo subsequently filed an inter partes reexamination, seeking to reexamine the original thirty-seven claims of the ‘849 patent and the district court continued the stay even though the patent was reissued by the PTO as RE43,707 (the ‘707 patent), because the inter partes reexamination proceedings initiated by Eizo were still pending before the PTO.
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