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Expired Canadian patentCanada

Luteinizing hormone releasing hormone antagonist peptides

CA 2108977 C · Owner: Zentaris Gmbh · Inventors: Deghenghi, Romano

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A luteinizing hormone releasing hormone antagonist peptide is provided which effectively decreases plasma levels of estrogens and androgens. The peptide exhibits increased levels of potency while at the same time minimizing histamine releasing properties, vascular permeability (or edematogenic effects) hypotension, poor , water solubility an inadequate duration of action associated with luteinizing hormone releasing hormone antagonist peptides of the past.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed March 17, 1992 and granted December 17, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 17, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 17, 1992
GrantedDecember 17, 2002
Term endedMarch 17, 2012
Patent numberCA 2108977 C
Classification (IPC)C07K7/23 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedMarch 17, 1992Patent grantedDec 17, 2002Term endedMarch 17, 2012

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.