Expired Canadian patentCanada
Manufacture of polyglutamate-therapeutic agent conjugates
CA 2387611 C · Owner: Klein, J. Peter · Inventors: Bhatt, Rama; Klein, J. Peter; Vawter, Edward
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 provides new processes for preparing polyglutamic acid-therapeutic agent conjugates for clinical development and pharmaceutical use, and polyglutamic acid-therapeutic agent conjugates prepared by these processes.
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 October 12, 2000 and granted March 29, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 12, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 12, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 12, 2000
GrantedMarch 29, 2011
Term endedOctober 12, 2020
Patent numberCA 2387611 C
Classification (IPC)A61K47/48
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.