Expired Canadian patentCanada
New pharmaceutical composition
CA 2066313 C · Owner: Newlands, Edward Stuart · Inventors: Stevens, Malcolm Francis Graham; Newlands, Edward Stuart
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
8-carbamoyl-3-methyl-(3H)-imidaro(5,1-d- 1,2,3,5-tetrazin-4-one for use in the treatment of glioma or mycosis fungoides.
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 16, 1992 and granted August 20, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 16, 2014.
- 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 16, 1992
GrantedAugust 20, 2002
Term endedApril 16, 2012
Patent numberCA 2066313 C
Classification (IPC)A61K31/41
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.