News & Analysis as of

Counterclaims Prior Art Patent Invalidity

A&O Shearman

UPC Ruling on amendment of counterclaims in patent revocation

A&O Shearman on

Sunstar Engineering Europe GmbH v. Ceracon GmbH, Mannheim Local Division, June 6, 2025 (UPC_CFI_745/2024) The UPC has recently clarified its strict approach to amending counterclaims for revocation in patent litigation....more

Smart & Biggar

Shire’s VYVANSE patent valid, prohibition order issued

Smart & Biggar on

On June 29, 2018, Justice Fothergill of the Federal Court granted Shire’s application under the pre-amended Patented Medicines (Notice of Compliance) Regulations (PMNOC Regulations) for an order prohibiting the Minister of...more

Proskauer - New England IP Blog

Cold to Mootness Challenge, But Warm to Inequitable Conduct Defenses

In a recent opinion from the District of Massachusetts, Judge Woodlock provided a reading on the mootness of an inequitable conduct counterclaim, where the asserted claims of the thermometer patent at issue were previously...more

Akin Gump Strauss Hauer & Feld LLP

IP Newsflash - June 2015 #2

DISTRICT COURT CASES - District Court Required Identification of Prior Art in Defendant’s Counterclaim of Invalidity - In the Southern District of New York, the court granted plaintiff’s motion to dismiss...more

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