Expired Canadian patentCanada
Methods and compositions for protein expression and purification
CA 2472477 C · Owner: Malakhova, Oxana A. · Inventors: Malakhov, Michael P.; Weeks, Steven D.; Tran, Hiep T.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods for enhancing expression levels and secretion of heterologous fusion proteins in a host cell are disclosed.
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 January 7, 2003 and granted March 20, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2025.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 7, 2003
GrantedMarch 20, 2012
Term endedJanuary 7, 2023
Patent numberCA 2472477 C
Classification (IPC)C12P21/06 +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.