
The Patent and Trial Appeal Board invoked the doctrine of prosecution history disclaimer to construe the claims at issue narrowly for the inter partes review of U.S. Patent No. 5,884,033; and thus, concluding that the claims had not been shown to be unpatentable in light of prior art. The Board rejected the Petitioner’s additional arguments that the claims as construed were not adequately described in the specification. The Board noted that it was not proper for it to consider whether the claims as construed were valid under 35 U.S.C. §112, first paragraph.
Continue Reading No Written Description, No Problem when Prosecution History Disclaimer is Applied





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The Federal Circuit’s precedential decision in