Method of enhancing cognition
CA 2208111 C · Owner: Johnson, Brian Frank · Inventors: Johnson, Brian Frank; Wallis, Robert Michael; Allen, Michael John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Darifenacin, and its pharmaceutically acceptable salts are useful in the treatment of, cognitive impairment. The invention also discloses the use of combinations of darifenacin or a pharmaceutically, acceptable salt thereof with an acetylcholinesterase inhibitor in the treatment of cognitive, impairment.
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 16, 1997 and granted October 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 16, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 16, 2019.
- 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.