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Structural formula of nicotinamide-beta-riboside, showing its pyridinium ring and ribose group

Federal Circuit erases $9.15 million fee penalty—but ChromaDex’s vitamin B3 patents stay invalid

A US appeals court reversed a $9.15 million attorneys’ fee award against ChromaDex and Dartmouth, finding that their defense of nicotinamide-riboside supplement patents was not exceptionally meritless. The decision does not revive the invalid claims, but it draws a consequential line between losing a natural-product patent case and litigating one unreasonably.

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