Mutant forms of meningococcal adp-ribosylating toxin
CA 2497279 C · Owner: Pizza, Mariagrazia · Inventors: Pizza, Mariagrazia; Masignani, Vega
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
NMB1343 is an ADP-ribosylating toxin from Neisseria meningitidis. The invention provides a mutant toxin having a substitution at one or more of amino Glu-109, Glu-111 or Glu-120. The mutations(s) is/are preferably Glu to Asp. The protein of the invention preferably has reduced or eliminated ADPribosyltransferase and/or NAD-glycohydrolase activity relative to the wildtype protein.
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 1, 2003 and granted February 19, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 2025.
- 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.