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Means-Plus-Function Software Indefiniteness

McDermott Will & Emery

“Payment Handler”: A Nonce Term Without Instructions

The US Court of Appeals for the Federal Circuit affirmed a district court’s ruling that a software term was a “nonce” term that invoked 35 U.S.C. § 112, sixth paragraph (i.e., a means-plus-function claim element). The Court...more

McDermott Will & Emery

Indefiniteness of Means-Plus-Function Claims

Addressing both the circumstances that lead to a claim limitation invoking a means-plus-function construction and indefiniteness issues for means-plus-function claims, the US Court of Appeals for the Federal Circuit affirmed...more

McDonnell Boehnen Hulbert & Berghoff LLP

Eon Corp. IP Holdings LLC v. AT&T Mobility LLC (Fed. Cir. 2015)

On September 23, 2010, Eon filed suit against seventeen defendants in the District Court of the District of Delaware, alleging infringement of U.S. Patent No. 5,663,757. During the case, the '757 patent went through two...more

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