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Expired Canadian patentCanada

Receptors for immune complexes

CA 1340201 C · Owner: Pirio, Marcel R. · Inventors: Pirio, Marcel R.; Kempe, Thomas D.; Ullman, Edwin F.

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Abstract From the Canadian patent

Receptors are disclosed that are antibodies that exhibit a binding affinity for an immune complex of a monoepitopic antigen and an antibody for such antigen that is substantially greater than the binding affinity for the monoepitopic antigen or the antibody for the monoepitopic antigen apart from the immune complex. Normally the monoepitopic antigen has a molecular weight less than 1500 and is an organic compound. The antibodies of the present invention find use in a method for determining a monoepitopic antigen in a sample suspected of containing such antigen. The method comprises forming an immune sandwich complex comprising the monoepitopic antigen or an analog thereof a first, …

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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 December 15, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 8, 1987
GrantedDecember 15, 1998
Term endedDecember 15, 2015
Patent numberCA 1340201 C
Classification (IPC)C07K16/42 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006200920122015Application filedOct 8, 1987Patent grantedDec 15, 1998Term endedDec 15, 2015

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