In this case, the defendant asserted a defense of inequitable conduct on the grounds that the inventors of the patent-in-suit were aware of prior art when they prosecuted the patent but failed to disclose that prior art.. On a motion to dismiss the inequitable conduct defense, the United States District Court for the Eastern District of Virginia held that the defendant had plead insufficient factual allegations to support an inequitable conduct defense.
The plaintiff asserted that the defendant had failed to sufficiently plead inequitable conduct because it had not plead that material prior art was withheld, sufficient knowledge of the prior art, and that such prior art was withheld with an intent to deceive the Patent and Trademark Office (“PTO”). The district court started its analysis by noting that inequitable conduct is akin to a claim for fraud and therefore must meet the particularity requirements of Federal Rule of Civil Procedure 9(b) (“In alleging fraud or mistake, a party must sate with particularity the circumstances constituting fraud or mistake.”).
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