Fused heteroaryl derivatives
CA 2407593 C · Owner: Moritomo, Hiroyuki · Inventors: Koizumi, Tomonobu; Hayakawa, Masahiko; Okada, Minoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Medicinal compositions which are useful as phosphatidylinositol 3-kinase (PI3K) inhibitors and anticancer agents; and novel bicyclic or tricyclic condensed heteroaryl derivatives or salts thereof having favorable effects of inhibiting PI3K and suppressing the proliferation of cancer cells.
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 April 26, 2001 and granted January 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2023.
- 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.