Patent Yard Sign in
Expired Canadian patentCanada

Use of a monoclonal antibody specific for a red blood cell to inhibit the reticuloendothelial system for the treatment of thrombocytopenia

CA 2467781 C · Owner: Freedman, John · Inventors: Lazarus, Alan H.; Freedman, John; Crow, Andrew R.

CIPO record

Overview

Drawings and full text

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

Open the CIPO record

Abstract From the Canadian patent

The present invention relates monoclonal antibodies specific for a red blood cell and capable of inhibiting the reticuloendothelial system for the treatment of idiopathic thrombocytopenic purpura (ITP) as well as for the reduction of platelet clearance. Related pharmaceutical composition and uses are also provided.

Read the whole patent

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 20, 2001 and granted September 23, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 2023.
  • 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 20, 2001
GrantedSeptember 23, 2014
Term endedNovember 20, 2021
Patent numberCA 2467781 C
Classification (IPC)A61K39/39 +2 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedNov 20, 2001Patent grantedSep 23, 2014Term endedNov 20, 2021

Sources & verification

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