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Expired Canadian patentCanada

Cytostatic or cytotoxic combination of active substances for use in therapeutic procedures

CA 2033249 C · Owner: Zeppezauer, Michael · Inventors: Zeppezauer, Michael; Leinenbach, Hans-Peter

CIPO record

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

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Abstract From the Canadian patent

According to this invention the combination of active substances for use in therapeutic procedures consists of at least one cytostatic compound, e.g. vincristine methotrexate, cisplatin as the first agent and at least one histone and/or one active histone fragment with cytostatic or cytotoxic activity as the second agent. Both active agents act synergistically at the site of the pathogenic process.

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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 December 27, 1990 and granted January 21, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 27, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 27, 1990
GrantedJanuary 21, 1997
Term endedDecember 27, 2010
Patent numberCA 2033249 C
Classification (IPC)A61K38/17

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedDec 27, 1990Patent grantedJan 21, 1997Term endedDec 27, 2010

Sources & verification

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