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Statutory Interpretation Obviousness Pharmaceutical Patents

McDermott Will & Emery

Prosecution history primacy: “Consisting essentially of” means what applicant said it meant

McDermott Will & Emery on

In a decision that underscores the primacy of prosecution history to determine claim scope, the US Court of Appeals for the Federal Circuit reversed the Patent Trial & Appeal Board’s interpretation of the transitional phrase...more

McDonnell Boehnen Hulbert & Berghoff LLP

Eye Therapies LLC v. Slayback Pharma, LLC (Fed. Cir. 2025)

Patent law in many respects has its own language and idiosyncratic expressions, and one such respect involves so-called "transitional" words or phrases (discussed in greater depth in the Manual of Patent Examination Procedure...more

McDonnell Boehnen Hulbert & Berghoff LLP

Recor Medical, Inc. v. Medtronic Ireland Mfg. (Fed. Cir. 2025)

The inter partes review provisions of the Leahy-Smith America Invents Act have been criticized for the propensity of the Patent Trial and Appeal Board (PTAB) to find invalid all or at least some of the challenged claims,...more

McDonnell Boehnen Hulbert & Berghoff LLP

Astellas Pharma, Inc. v. Sandoz Inc. (Fed. Cir. 2024)

One of the anticipated consequences of the Supreme Court's Loper decision is that it will unleash judges to impose their statutory interpretations of administrative agencies' applications of the law within their areas of...more

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