Canadian application, no grantCanada
Multimeric erythropoietin with increased biological activity
CA 2272603 A1 · Owner: Sytkowski, Arthur J. · Inventors: Sytkowski, Arthur J.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Modified polypeptides with increased biological activity exhibited as either increased potency or prolonged circulating half-life are disclosed with methods of preparing the modified polypeptides and methods of use.
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 24, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 2019.
- 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 24, 1997
GrantedNo grant recorded
Term endedNovember 24, 2017
Patent numberCA 2272603 A1
Classification (IPC)C07K14/50 +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.