Avian cell lines for the production of useful substances
CA 2478125 C · Owner: Guehenneux, Fabienne · Inventors: Pain, Bertrand; Guehenneux, Fabienne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for production of avian cell lines comprising a progressive or total separation of growth factors from the serum and/or from the feeder layer such that the lines established are adherent or non-adherent cells capable of indefinite proliferation in a base culture medium. The invention further relates to cells derived from said lines which are particularly of use in production of useful substances.
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 March 7, 2003 and granted May 7, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 7, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 7, 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
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.