Method of preparing a monoclonal antibody, monoclonal antibody, a pharmaceutical composition and a diagnostic reagent
CA 2221682 C · Owner: N.V. Organon · Inventors: Steenbakkers, Petrus Gerardus Antonius
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an efficient method of producing monoclonal antibodies against surface antigens of cells and viruses. The method accommodates for antigens which are present in only relatively small amounts or, antigens of which only very small amounts are available or antigens which easily lose their in vivo conformation. Thus the method according to the invention comprises a series of steps, comprising a step in which B-cells from a mammal injected with surface antigen-comprising material are enriched with respect to the relative number of specific B-cells and a step which comprises a small-scale fusion technique.
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 November 25, 1997 and granted October 18, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2019.
- 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.