Solid pharmaceutical dosage form
CA 2689639 C · Owner: Ghosh, Soumojeet · Inventors: Ghosh, Soumojeet; Liepold, Bernd; Rosenberg, Joerg
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A solid pharmaceutical dosage form providing improved oral bioavailability is disclosed for inhibitors of HIV protease. In particular the dosage form comprises a solid dispersion of at least one HIV protease inhibitor and at least one pharmaceutically acceptable water-soluble polymer and at least one pharmaceutically acceptable surfactant said pharmaceutically acceptable water-soluble polymer having a Tg of at least about 50 °C. Preferably the pharmaceutically acceptable surfactant has an HLB value of from about 4 to about 10.
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 August 23, 2004 and granted June 10, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 23, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 23, 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.
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.