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Expired Canadian patentCanada

Mammalian cell surface antigens; related reagents

CA 2274801 C · Owner: Mattson, Jeanine D. · Inventors: Gorman, Daniel M.; Mattson, Jeanine D.

CIPO record

Overview

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

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Abstract From the Canadian patent

Purified genes encoding a T cell surface antigen from a mammal reagents , related thereto including purified proteins specific antibodies, and nucleic , acids encoding this antigen are provided. Methods of using said reagents and diagnostic kits are also provided.

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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 12, 1997 and granted February 4, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2019.
  • 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 12, 1997
GrantedFebruary 4, 2014
Term endedDecember 12, 2017
Patent numberCA 2274801 C
Classification (IPC)C12N15/62 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedDec 12, 1997Patent grantedFeb 4, 2014Term endedDec 12, 2017

Sources & verification

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