Use of (r)-(-)-2-5-(4-fluorophenyl)-3-pyridylmethylaminomethyl-chromane for treating adverse effects of anti-parkinsonian drugs
CA 2402402 C · Owner: Merck Patent Gesellschaft Mit Beschraenkter Haftung · Inventors: Weber, Frank; Bartoszyk, Gerd; Russ, Hermann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
R)-(-)-2-5-(4-fluorophenyl)-3-pyridylmethylaminomethyl-chromane or a physiologically acceptable salt thereof is used for the manufacture of a medicament for the treatment of extrapyramidal movement disorders and/or adverse effects in extrapyramidal movement disorders. A preferred salt is (R)- (-)-2-5-(4-fluorophenyl)-3-pyridylmethylaminomethyl-chromane hydrochloride.
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 February 1, 2001 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 1, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 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.
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.