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Expired Canadian patentCanada

Anti-human ovarian cancer immunotoxins and methods of use thereof

CA 1289880 C · Owner: Cetus Oncology Corporation · Inventors: Laird, Walter J.; Pastan, Ira H.; Bjorn, Michael J.

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Abstract From the Canadian patent

38-, Abstract of the Disclosure, Immunotoxins comprising a cytotoxic moiety and monoclonal antibodies which bind to human ovarian cancer tissue having at least one of the following capabilities are claimed: cytotoxic ID50 of 10 nM or less against human ovarian cancer cells retardation of human, ovarian cancer tumor growth in mammals or extension of survival of a mammal carrying a human ovarian cancer tumor. Antigens to which the monoclonal antibody of the immunotoxin bind are identified and characterize the immunotoxins. Methods of killing human ovarian cancer cells, retarding the growth of human ovarian cancer tumors in mammals or extending the survival of mammals carrying human ovarian …

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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 1, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2008.
  • 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 27, 1986
GrantedOctober 1, 1991
Term endedOctober 1, 2008
Patent numberCA 1289880 C
Classification (IPC)A61K39/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 27, 1986Patent grantedOct 1, 1991Term endedOct 1, 2008

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