News & Analysis as of

Expert Testimony Claim Construction Means-Plus-Function

McDermott Will & Emery

Bottling the Truth: Equivalence and Reverse Equivalence

McDermott Will & Emery on

The US Court of Appeals for the Federal Circuit ruled that the “substantially the same way” comparison in connection with a doctrine of equivalents (DOE) analysis involving a means-plus-function claim limitation should focus...more

Proskauer - New England IP Blog

Federal Circuit Revisits and Recasts Means-Plus-Function Claim Interpretation

An en banc decision from the Federal Circuit last week overruled a line of cases governing the interpretation of functional claim language, calling into question how courts, the PTO, and industry will treat such language in...more

Kelley Drye & Warren LLP

Federal Circuit Defers To District Court’s Factual Finding That “Voltage Source Means” Connotes Sufficient Structure To Avoid...

Today, the Federal Circuit issued a ruling in Lighting Ballast v. Philips on remand from the Supreme Court after the Teva decision changed the standard of review of a district court’s claim construction. One of the more...more

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