Compositions and methods for treating neuropathic sensory loss
CA 2507217 C · Owner: Dworkin, Robert D. · Inventors: Galer, Bradley Stuart; Gammaitoni, Arnold R.; Dworkin, Robert D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to methods of reducing the effects of neuropathically induced negative sensory phenomena (NSP). NSP are manifested as the decreased ability to feel light touch pain, proprioception, vibration, warm/heat and coolness/cold. The NSP are treated by application of an anesthetic. The anesthetic is preferably a benzoic acid-based anesthetic. Specifically, a patch containing about 5% lidocaine may be used. The anesthetic is transdermally administered to a patient suffering from NSP at or near the locus of the negative sensory phenomena.
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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 November 25, 2003 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2025.
- 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.