Aryl substituted pyrazoles, triazoles and tetrazoles, and the use thereof
CA 2400778 C · Owner: Purdue Pharma L.P. · Inventors: Hogenkamp, Derk; Nguyen, Phong; Yang, Ji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to compounds having the Formula (I) or a pharmaceutically acceptable salt, prodrug or solvate thereof wherein Het and , R5 - R8 are set in the specification. The invention also is directed to the use of compounds of Formula (I) for the treatment of neuronal damage following global and focal ischemia, for the treatment or prevention of neurodegenerative conditions such as amyotrophic lateral sclerosis (ALS) and , for the treatment, prevention or amelioration of both acute or chronic pain as antitinnitus agents, as anticonvulsants and as antimanic depressants, as , local anesthetics as antiarrhythmics and for the treatment or prevention of diabetic neuropathy.
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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 March 22, 2001 and granted May 3, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 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.