Expired Canadian patentCanada
Dual-specific ligand and its use
CA 2447851 C · Owner: Winter, Greg · Inventors: Jones, Philip; Tomlinson, Ian; Winter, Greg
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 a dual-specific ligand comprising a first single immunoglobulin variable domain having a first binding specificity and a complementary immunoglobulin single variable domain having a second binding specificity.
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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 June 28, 2002 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2024.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 28, 2002
GrantedAugust 28, 2012
Term endedJune 28, 2022
Patent numberCA 2447851 C
Classification (IPC)C07K16/46 +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.