Expired Canadian patentCanada
Scorpionate-like pendant macrocyclic ligands, complexes and compositions thereof, and methods of using same
CA 2487908 C · Owner: Brechbiel, Martin W. · Inventors: Chong, Hyun-Soon; Brechbiel, Martin W.
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted 1,4,7-triazacyclononane-N,N',N"-triacetic acid compounds with a pendant donor amino group, metal complexes thereof compositions thereof, and , methods of use in diagnostic imaging and treatment of a cellular disorder.
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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 3, 2003 and granted February 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 3, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 3, 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.
FiledJune 3, 2003
GrantedFebruary 12, 2013
Term endedJune 3, 2023
Patent numberCA 2487908 C
Classification (IPC)C07D255/02 +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.