Antiviral agent in the form of nose drops
CA 2372099 C · Owner: Markova, Elena Alexeevna · Inventors: Markova, Elena Alexeevna; Markov, Iliya Alexandrovich; Gaponjuk, Petr Yakovlevich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention can be used in pharmacology specifically in the preparation of interferon-containing compositions, which are capable of conserving their biological activity and can be administrated intranasally e.g. in the , preparation of nasal drops. This invention essentially refers to an antiviral agent in the form of nasal drops that contains a genetically engineered alpha, beta or gamma interferon with a viscosity of (1.1 - 30.0) * 10 Pa*s, a biocompatible polymer and a buffer mixture. The agent may further include an antioxidant, and the ingredients are contained in the following amounts per ml buffer mixture: 1,000 to 500,000 IU of genetically engineered interferon; …
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 September 6, 1999 and granted October 18, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2021.
- 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.