By Donald Zuhn —
The Federal Circuit's recent decision in Tafas v. Doll, in which the CAFC found that new Rule 265 — which creates the dreaded Examination Support Document (ESD) — was both procedural and not inconsistent with the Patent Act (see "Tafas v. Doll (Fed. Cir. 2009)"), and the introduction last week of Senator Jon Kyl's patent reform bill (S. 610), which includes an inequitable conduct provision that transfers final determinations of inequitable conduct from the courts to the U.S. Patent and Trademark Office (see "Senator Kyl Introduces Alternative to Leahy Patent Reform Bill"), re-focused our attention on a letter sent by the American Bar Association's Section of Intellectual Property Law to Senators Patrick Leahy and Arlen Specter last February. Senator Leahy's patent reform bill (S. 515), which was introduced on March 3rd, does not contain an inequitable conduct provision (see "Senate and House Introduce New Patent Reform Legislation").

In the letter, which was signed by Section of Intellectual Property Chair Gordon Arnold, the Section expressed the view that "the defense [of inequitable conduct] should be reformed and retained, rather than eliminated in favor of administrative proceedings in the PTO" — such as would happen if Senator Kyl's bill was passed into law. Instead, the Section states that the defense of unenforceability based on inequitable conduct should be predicated on principles of common law fraud. According to the letter, by applying such principles any judgment of unenforceability would require proof, by clear and convincing evidence, that:
(2) in the absence of such misrepresentation or omission, the USPTO, acting reasonably, would not have granted or maintained in force at least one invalid claim; and
(3) the misrepresentation or omission occurred with a specific intent to deceive the USPTO, and that such intent cannot be established by the mere materiality of the misrepresentation or omission.
The Section also notes that it opposes basing an inequitable conduct defense on any conduct that did not substantially affect the validity, scope, or duration of one or more claims of the patent. The Section also notes the views expressed in the letter are those of the Section and not the ABA as a whole.
It will be interesting to see whether any inequitable conduct amendments, including all or part of the Section's proposal, will be introduced at the Senate Judiciary Committee's Executive Business Meeting on March 26th (see "Senate Judiciary Committee Places Patent Reform Bill on Agenda").

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