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Expired Canadian patentCanada

Chimeric gene formed of the dna sequences that encode the antigenic determinants of four proteins of l. infantum, and protein encoded by said gene, and pharmaceutical composition useful for preventing and/or treating leishmaniosis in animals or humans

CA 2256124 C · Owner: C.B.F. Leti S.A. · Inventors: Requena Rolania, Jose Maria; Alonso Bedate, Carlos; Soto Alvarez, Manuel

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Abstract From the Canadian patent

Described is a chimeric gene formed by the DNA sequences that encode antigenic determinants of four proteins of L. infantum useful for preventing or treating canine Leishmaniasis. The protein encoded by the chimeric gene contains one or more of the antigenic determinants of four proteins of L. infantum encoded by the chimeric gene. Also described as pharmaceutical compositions for the prevention and/or treatment of Leishmaniasis.

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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 23, 1998 and granted June 16, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 23, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2020.
  • 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 23, 1998
GrantedJune 16, 2015
Term endedDecember 23, 2018
Patent numberCA 2256124 C
Classification (IPC)C12N15/62 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedDec 23, 1998Patent grantedJune 16, 2015Term endedDec 23, 2018

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