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Expired Canadian patentCanada

Gnrh antagonists

CA 1262399 C · Owner: Roeske, Roger W. · Inventors: Roeske, Roger W.

CIPO record

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Abstract From the Canadian patent

GnRH ANTAGONISTS, ABSTRACT OF THE DISCLOSURE Peptides which inhibit the secretion of gonadotropins by the pituitary gland and inhibit the release of steroids by the gonads. Administration of an effective amount prevents ovulation of female mammalian eggs and/or the release of steroids by the gonads. The peptides have the structure:, X-R1-R2-R3-Ser-R5-R6-R7-Arg-Pro-R10 wherein X is hydrogen, Acr or Ac; R1 is .beta.-D-2NAL dehydroPro or, 4Cl-D-Phe; R2 is Cl-D-Phe F-D-Phe or C.alpha.Me-Cl-D-Phe;, R3 is D-Trp or .beta.-D-2NAL; R5 is Arg or D-Arg; R6 is D-Tyr, .beta.-D-2NAL or D-Arg; R7 is Leu or NML; and R10 is Gly-NH2, NHCH2CH3 or D-Ala-NH2.

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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

  • Granted October 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 17, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 15, 1984
GrantedOctober 17, 1989
Term endedOctober 17, 2006
Patent numberCA 1262399 C
Classification (IPC)C07K7/23 +1 more

Timeline

Timeline From CIPO dates

19851988199119941997200020032006Application filedNov 15, 1984Patent grantedOct 17, 1989Term endedOct 17, 2006

Sources & verification

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