Heparin-derived polysaccharide mixtures, preparation thereof and pharmaceutical compositions containing same
CA 2501546 C · Owner: Viskov, Christian · Inventors: Biberovic, Vesna; Viskov, Christian; Mourier, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns heparin-derived polysaccharide mixtures having an average molecular weight of 1500 to 3000 daltons and an anti-Xa/anti-IIa ratio higher than 30 their preparation method and pharmaceutical compositions containing same.
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 October 8, 2003 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 8, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 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.