Drug formulations having reduced abuse potential
CA 2525111 C · Owner: Shire Laboratories Inc. · Inventors: Burnside, Beth; Couch, Richard; Chang, Rong-Kun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Drug formulations having reduced abuse potential which contain one or more of (1) an agent that has a nasty odor, (2) a bright deterrent/indicator dye and (3) fine insoluble particulate matter. The malodorous agent and dye are in a form which does not affect proper administration of the drug but the odorous , agent creates a nasty odor when the dosage form is crushed or chemically extracted and nasally, by inhalation, orally buccally or sublingually , administered and the dye produces a bright color when crushed and contacted. The fine insoluble particulate matter hinders extraction of the drug from the dosage form and, when crushed, can deter intravenous injection because of the …
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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 May 12, 2004 and granted December 31, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 12, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 12, 2026.
- 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.