Expired Canadian patentCanada
Humanized anti-cd4 antibody with immunosuppressive properties
CA 2519620 C · Owner: Wijdenes, John · Inventors: Wijdenes, John; Jonuleit, Helmut
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a humanized antibody derived from mouse monoclonal anti-CD4 antibody B-F5. Said antibody is able to activate CD25+CD4+ regulatory T cells and is useful for preparing immunosuppressive compositions.
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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 March 19, 2004 and granted February 3, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 19, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 19, 2004
GrantedFebruary 3, 2015
Term endedMarch 19, 2024
Patent numberCA 2519620 C
Classification (IPC)C12N15/13 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.