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Federal Circuit Applies Bilski Standard in Classen

By Warren D. Woessner and Tania A. Shapiro-Barr
February 26, 2009

The Federal Circuit's October 2008 decision in In re Bilski, 545 F.3d 943 (Fed. Cir. 2008) (en banc), created uncertain implications for biotechnology regarding the applicable standard for patent eligibility under 35 U.S.C. '101. In its recent one-paragraph opinion in Classen Immunotherapies v. Biogen IDEC, 2008 WL 5273107 (Fed. Cir. 2008), the Federal Circuit left many issues unexplained, but it did make one thing clear: The Bilski standard, now being applied in the area of biomedical technology, poses a significant threat to the viability of patents claiming diagnostic methods.

The Bilski Case

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