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Expired Canadian patentCanada

Stabilising formulation for immunoglobulin g compositions in liquid form and in lyophilised form

CA 2521909 C · Owner: Khandoudi, Nassirah · Inventors: Bardat, Annie; Just, Olivier; Schmitthaeusler, Roland

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The invention relates to a stabilising formulation for immunoglobulin G compositions comprising a sugar alcohol, glycine and a non-ionic detergent appropriate for the stabilisation of immunoglobulin G compositions in liquid form and in lyophilised form. The invention further relates to an immunoglobulin G composition in liquid form or in lyophilised form comprising said stabilising formulation.

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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 8, 2004 and granted November 6, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 8, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 8, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 8, 2004
GrantedNovember 6, 2012
Term endedApril 8, 2024
Patent numberCA 2521909 C
Classification (IPC)A61K39/39 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedApril 8, 2004Patent grantedNov 6, 2012Term endedApril 8, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.