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Claim Limitations Intellectual Property Protection Appeals

McDermott Will & Schulte

Specification controls: Written description must be clear

The US Court of Appeals for the Federal Circuit reversed a district court’s decision upholding patent validity, finding that the subject patent’s specification clearly established that the written description failed to...more

Sheppard Mullin Richter & Hampton LLP

Federal Circuit Finds that a Narrowing Claim Limitation that Expressly Requires Optional Elements of a Markush Group from the Same...

In Maxell, Ltd. v. Amperex Technology Limited, 2023-1194 (Fed. Cir. Mar. 6, 2024), the Federal Circuit reaffirms that a patent claim that includes narrowing limitations requiring only some elements of a Markush group recited...more

Knobbe Martens

Silence Is No Support for Negative Claim Limitation

Knobbe Martens on

NOVARTIS PHARMACEUTICALS CORP. V. HEC PHARM CO., LTD. Before Moore, Hughes, and Linn (dissenting). Appeal from the United States District Court for the District of Delaware. Summary:  Silence regarding the presence or...more

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