Peptide amidation process
CA 2485698 C · Owner: Seo, Jin Seog · Inventors: Seo, Jin Seog; Strydom, Daniel; Holmquist, Barton
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a process for amidating a desired peptide comprising cleaving a substrate polypeptide at a X1- cysteine sequence wherein X1 is the , amino acid at the peptide carboxyl-terminus and cystein is the first amino acid of a palladium cleavage site comprising the sequence cysteine-X2 - X3 wherein X2 is any amino acid, X3 is an amino acid selected from the group consisting of cysteine, histidine, or methionine and wherein the , carboxyl~terminus of the peptide is amidated upon cleavage at the Xl- cysteine sequence.
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 May 23, 2003 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 23, 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.
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.