Expired Canadian patentCanada
Stable gabapentin containing more than 2o ppm of chlorine ion
CA 2410867 C · Owner: Singer, Claude · Inventors: Schwartz, Eduard; Singer, Claude; Pesachovich, Michael
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pharmaceutical compositions containing substantially pure and stable gabapentin are disclosed wherein gabapentin contains an anion of a mineral acid, such as chloride, in amounts greater than 20 ppm.
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 15, 2001 and granted December 9, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 15, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 15, 2001
GrantedDecember 9, 2003
Term endedJune 15, 2021
Patent numberCA 2410867 C
Classification (IPC)A01N37/12 +2 more
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.