Expired Canadian patentCanada
Pharmaceutical formulations containing methylnaltrexone
CA 2521379 C · Owner: Progenics Pharmaceuticals, Inc. · Inventors: Boyd, Thomas A.; Sanghvi, Suketu P.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Stable pharmaceutical compositions useful for administering methylnaltrexone are described, as are methods for making the same. Kits including these , pharmaceutical compositions also are provided.
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 April 8, 2004 and granted July 2, 2013. 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
GrantedJuly 2, 2013
Term endedApril 8, 2024
Patent numberCA 2521379 C
Classification (IPC)A61K31/48
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.