Polypeptides isolated from the venom of the spider hololena curta
CA 2006087 C · Owner: Merrell Pharmaceuticals Inc. · Inventors: Stapleton, Andrew G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to novel, relatively low molecular weight, 36-38 amino acid polypeptides isolated and purified from the toxin of the spider Hololena curta or synthetically, produced, which are useful as insecticides and in the treatment of glutamate antagonist and calcium antagonist related pharmacological conditions.
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 20, 1989 and granted September 21, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2011.
- 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.