Pharsight

Relenza patents expiration

Drug Patent Number Company Drug Patent Title Drug Patent Expiry Activity Alert
These drug patents focus on the other aspects of the active substance like dosage, mode of administration (oral, tablet, capsules, liquids etc).
US5360817 GLAXOSMITHKLINE Derivatives and analogues of 2-deoxy-2,3-didehydro-N-acetyl neuraminic acid and their use as antiviral agents
Jul, 2013

(10 years ago)

US5648379 GLAXOSMITHKLINE Derivatives and analogues of 2-deoxy-2,3-didehydro-n-acetyl neuraminic acid and their use as antiviral agents
Jul, 2014

(9 years ago)

US6294572 GLAXOSMITHKLINE Crystalline N-acetyl neuraminic acid derivatives and process for their preparation
Dec, 2014

(9 years ago)

Relenza is owned by Glaxosmithkline.

Relenza contains Zanamivir.

Relenza has a total of 3 drug patents out of which 3 drug patents have expired.

Expired drug patents of Relenza are:

  • US5360817
  • US5648379
  • US6294572

Relenza was authorised for market use on 26 July, 1999.

Relenza is available in powder;inhalation dosage forms.

Relenza can be used as prophylaxis of influenza.

The generics of Relenza are possible to be released after 15 December, 2014.

Drugs and Companies using ZANAMIVIR ingredient

Market Authorisation Date: 26 July, 1999

Treatment: Prophylaxis of influenza

Dosage: POWDER;INHALATION

More Information on Dosage

RELENZA family patents

Family Patents