Injectable hyaluronate-sulfated polysaccharide conjugates
CA 2377529 C · Owner: Depuy Spine, Inc. · Inventors: Liu, Linshu; Spiro, Robert C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An injectable composition is provided for promoting bone and/or cartilage growth comprising hyaluronic acid cross-linked to sulfated polysaccharide through linking groups. The linking groups are diamines or amino polyalkylene glycols. The sulfated polysaccharide binds growth factors suitable for promoting tissue growth at the site of application of the 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 June 16, 2000 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2022.
- 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.