High-concentration lidocaine compositions and methods for their preparation
CA 2467167 A1 · Owner: Ferndale Laboratories Inc. · Inventors: Patel, Pravin M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition comprising lidocaine-containing liposomes wherein the weight concentration of lidocaine in said composition is greater than 10 %. The composition is prepared by mixing water with an oil phase comprising lidocaine, a C14-C20 alcohol, an alkyl ester of a fatty acid propylene , glycol, and a polyalkyl stearate. The non-aqueous phase may also include a phospholipid such as phosphatidyl choline.
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 November 13, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2024.
- 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.