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Expired Canadian patentCanada

Anticancer agents based on prevention of protein prenylation

CA 2353867 C · Owner: Okolotowicz, Karl J. · Inventors: Lefler, Scott R.; Okolotowicz, Karl J.; Robinson, Dale E.

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Abstract From the Canadian patent

Prenylating enzymes are involved in modifying oncoproteins such as RAS, so , that growth of neoplastic cells becomes uncontrolled. Inactivation of such enzymes can prevent uncontrolled growth. .alpha.-Dicarbonyl compounds can be used to covalently modify and thereby inactivate prenylating enzymes such as protein farnesyltransferase and protein geranylgeranyltransferase. The compounds can be designed to enhance affinity and/or specificity for a particular protein substrate.

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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 9, 1999 and granted October 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2021.
  • 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 9, 1999
GrantedOctober 8, 2013
Term endedDecember 9, 2019
Patent numberCA 2353867 C
Classification (IPC)C07C49/12 +2 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedDec 9, 1999Patent grantedOct 8, 2013Term endedDec 9, 2019

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