Vanda defends Hetlioz patents all the way to Supreme Court, but loses

23 April 2024

A single-line order from the US Supreme Court has scotched hopes on the part of Vanda Pharmaceuticals (Nasdaq: VNDA) of resurrecting patents for Hetlioz (tasimelteon).

The sleep disorder drug is the first and only medication that has been clinically proven to treat people with non-24-hour sleep–wake disorder. It is also available to treat sleep disturbances in people with Smith-Magenis syndrome.

The legal dispute, involving Israel’s Teva Pharmaceutical Industries (NYSE/TASE: TEVA) and Canadian generics drugmaker Apotex Pharmaceutical, ended several years ago with a ruling against Vanda.

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