Interferon and immunoglobulin fc fragment hybrid
CA 2495480 A1 · Owner: Chang, Tse Wen · Inventors: Yu, Liming; Chang, Tse Wen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides interferon-immunoglobulin Fc fusion proteins ("IFN-Fc hybrids") that are useful for removing or regressing tumors or delaying tumor development. The IFN-Fc hybrids preferably include peptide linkers between the IFN and the Fc fragment. These linkers are T cell inert sequences or any non-immunogenic sequence preferably Gly-Ser repeat units. , The preferred Fc fragment is a human immunoglobulin Fc fragment preferably , the .gamma.4 chain.
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 August 7, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 7, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.