KANEKA CORPORATION v. XIAMEN KINGDOMWAY (Fed. Cir. 2015) (P) – Lack of word-for-word alignment of specification and claims does not require use of extrinsic evidence

Word-for-word alignment of the specification with the claim language is unnecessary for the appropriate meaning of a claim term to be ascertained from the intrinsic record. Here, for example, although the term “sealed” tank was added to the claims during prosecution...

NOVARTIS PHARMACEUTICALS v. WATSON LABORATORIES, INC. (Fed. Cir. 2015) (NP) – Even an obvious solution does not render an invention obvious if the problem solved was previously unknown

Even an obvious solution does not render an invention obvious if the problem solved was previously unknown. Here, for example, even though the addition of the claimed “antioxidant” would have been an obvious solution for a formulation with known oxidation problems,...

ARCELORMITTAL FRANCE v. AK STEEL CORPORATION (Fed. Cir. 2015) (P) – Reissue amendments may be deemed impermissibly broadening in view of prior litigation claim construction

Amendments during reissue may be deemed broadening and thereby render a patent unenforceable if they broaden a previous and controlling claim construction from prior litigation even if the PTO’s broadest reasonable interpretation may perceive them as narrowing. Here,...