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Expired Canadian patentCanada

Method of treating viral infections with c-reactive protein

CA 2123786 C · Owner: Immtech International Incorporated · Inventors: Potempa, Lawrence A.

CIPO record

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Abstract From the Canadian patent

The invention provides a method of treating a viral infection in a mammal comprising administering an effective amount of modified C-reactive protein (CRP) to the mammal. In particular modified-, CRP has been found to be effective and safe for treating retroviral infections, including human immunodeficiency virus 1. The invention also provides a method of neutralizing a virus comprising contacting the virus with modified-CRP. In particular modified-CRP can be used to neutralize viruses in blood which is to be used for transfusions by adding the modified-CRP to the blood prior to the transfusion.

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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 November 23, 1992 and granted August 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 23, 2012.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 2014.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 23, 1992
GrantedAugust 1, 2000
Term endedNovember 23, 2012
Patent numberCA 2123786 C
Classification (IPC)A61K38/17 +2 more

Timeline

Timeline From CIPO dates

1993199519971999200120032005200720092011Application filedNov 23, 1992Patent grantedAug 1, 2000Term endedNov 23, 2012

Sources & verification

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