Method of enhancing of binding activity of antibody composition to fcy receptor iiia
CA 2481658 A1 · Owner: Kyowa Hakko Kirin Co. Ltd. · Inventors: Nakamura, Kazuyasu; Shitara, Kenya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of enhancing the activity of an antibody of binding to Fc.gamma. receptor IIIa; a method of enhancing the antibody-dependent cytotoxic activity of an antibody composition; a method of detecting the ratio of sugar chains having no fucose bonded to N-acetylglucosamine at the sugar chain reducing end among total N-glycoside bond-type complex sugar chains binding to the Fc region contained in an antibody composition; a method of detecting an antibodydependent cytotoxic activity; an Fc-fused protein composition produced with the use of cells having tolerance to a lectin recognizing a sugar chain structure in which an .alpha.-bond is formed between the 6-position of …
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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 April 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 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.
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.