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Federal Circuit

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Teva Pharmaceuticals v. Sandoz (Federal Circuit 2013) — Court Applies De Novo Review to All Claim Construction, Drawing Supreme Court Reversal

The Federal Circuit applied de novo review to all aspects of claim construction and affirmed the invalidity of Teva’s multiple sclerosis drug patents — a ruling the Supreme Court partially reversed in 2015, holding that underlying factual findings in claim construction must be reviewed for cle

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CLS Bank International v. Alice Corp. — Federal Circuit En Banc Produces Fractured § 101 Ruling on Software Patents

Ten Federal Circuit judges issued seven different opinions and could not agree on a single legal standard for software patent eligibility under § 101, affirming by an evenly divided court that Alice’s financial settlement patents were invalid — a fractured ruling that led directly to the Supre

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Biosig Instruments v. Nautilus (Federal Circuit 2013) — Court Upholds ‘Spaced Relationship’ Claim Under Lenient Indefiniteness Standard, Drawing Supreme Court Correction

The Federal Circuit held that the term ‘spaced relationship’ in a heart rate monitor patent was not indefinite because it was ‘amenable to construction’ and not ‘insolubly ambiguous’ — applying its then-prevailing indefiniteness test that the Supreme Court unanimo

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