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Expired Canadian patentCanada

Therapeutic compositions against sterptococcal infections, transformed hosts, methods of immunization and genetically engineered products

CA 1341255 C · Owner: University Of Tennesee Research Corporation · Inventors: Beachey, Edwin H.; Kehoe, Michael A.; Poirier, Thomas P.

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Abstract From the Canadian patent

Non-virulent bacteria are disclosed into which have been cloned heterologous nucleotide sequences encoded for the expression of Streptococcal M protein antigens, which are effective to elicit opsonic antibodies against Streptococcal infections. These bacteria are useful for vaccination against Streptococcus pyogenes bacteria.

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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 June 19, 2001. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 22, 1988
GrantedJune 19, 2001
Term endedJune 19, 2018
Patent numberCA 1341255 C
Classification (IPC)C12N1/21 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007201020132016Application filedAug 22, 1988Patent grantedJune 19, 2001Term endedJune 19, 2018

Sources & verification

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