Substituted polycyclic aryl and heteroaryl pyrazinones useful for selective inhibition of the coagulation cascade
CA 2409445 A1 · Owner: Wang, Ching-Cheng · Inventors: Zeng, Qingping; Rueppel, Melvin L.; Lindmark, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to substituted polycyclic aryl and heteroaryl pyrazinone compounds useful as inhibitors of serine proteases of the coagulation cascade and compounds, compositions and methods for anticoagulant therapy for the treatment and prevention of a variety of thrombotic conditions including coronary artery and cerebrovascular diseases.
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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 November 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 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.
Timeline
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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.