2,3-diphenylpropionic acid derivatives or their salts, medicines or cell adhesion inhibitors containing the same, and their usage
CA 2419008 A1 · Owner: Kaken Pharmaceutical Co. Ltd. · Inventors: Ikegami, Satoru; Okuyama, Akihiko; Hoshina, Yoichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2,3-Diphenylpropionic acid derivatives of the general formula (1) or their salts; and medicines and cell adhesion inhibitors containing the derivatives , or the salts as the active ingredient: (1) wherein A B and C are each , independently hydrogen or a monovalent substituent; and X and X' are each independently hydrogen or a monovalent substituent.
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 August 10, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 10, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 10, 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.