Non-irritation, non-sensitizing, non-ototoxic otic antibacterial compositions
CA 2199294 C · Owner: Bayer Corporation · Inventors: Goldman, David; Purwar, Shivaji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions of introduction, preferably by instillation into human and animal ears, and a method for the treatment of otitis externa, and otitis media especially otorrhea. The compositions are non-ototoxic non-irritating and non-sensitizing. The compositions are aqueous based and contain ciprofloxacin and optionally hydrocortisone.
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 5, 1996 and granted September 19, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 5, 2018.
- 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.