Pharmaceutical formulation containing penciclovir
CA 2074503 C · Owner: Beecham Group P.L.C. · Inventors: Oduro-Yeboah, Joshua; Goodall, Alan John; Griffiths, Hazel-Ann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oil-in-water topical pharmaceutical formulation or an aqueous formulation for the treatment of virus infections of the skin or mucosa, comprising at least 30 % of propylene glycol and solubilised penciclovir.
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 January 24, 1991 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2013.
- 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.