Antibody composition which specifically binds to cd20
CA 2471647 A1 · Owner: Kyowa Hakko Kogyo Co. Ltd. · Inventors: Shinkawa, Toyohide; Shitara, Kenya; Nakano, Ryosuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition comprising an antibody molecule which binds specifically to CD20 and has an N-glycoside bond complex type sugar chain Fc domain; cells or a transgenic nonhuman animal or plant producing the composition; a process for producing the antibody composition; and drugs containing the antibody composition.
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 December 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 25, 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.
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.