Novel x-conotoxin peptides (-i)
CA 2508129 C · Owner: Alewood, Paul Francis · Inventors: Lewis, Richard James; Palant, Elka; Alewood, Dianne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An isolated, synthetic or recombinant .chi.-conotoxin peptide comprising the following sequence of amino acids: Xaa1 Xaa2 Gly Val Cys Cys Gly Tyr Lys Leu Cys His Pro Cys SEQ ID NO. 3 where Xaa1 is a N-terminal Xaa1 is a N-terminal pyroglutamate (pGlu) or D-pyroglutamate (DpGlu) residue; and Xaa2 is Asn or a deletion; or such a sequence in which one or more Cys is replaced with its corresponding D-amino acid and/or one or more amino acid residues other than Cys has undergone a side chain modification or a salt, ester, amide or , prodrug thereof. The invention also relates to pharmaceutical compositions comprising these peptides and the use of these peptides in the prophylaxis or …
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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 December 2, 2003 and granted June 26, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 2, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 2, 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.