Improvements in or relating to glycopeptide deriveratives
CA 2031803 C · Owner: Nagarajan, Ramakrishnan · Inventors: Nagarajan, Ramakrishnan; Schabel, Amelia A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New N-alkyl and N-acyl derivatives of, A82846A A82846B, A82846C and PA-42867-A are provided. The new glycopeptide derivatives are useful for the treatment of susceptible bacterial infections especially infections due to Gram-positive microorganisms.
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 December 7, 1990 and granted May 29, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 7, 2012.
- 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.